I used to do this when my daughter was little, "just in case." When going on a crowded outing with your kid, snap a photo of them on your cell phone camera when you arrive. That way, if something happens and you get separated, you have a photo of them that is recent, in the clothes they're wearing that day. Also, stick one of your business cards in your kid's pockets.

Never go grocery shopping when you're hungry.

Measure your hand from your fingertips to palm and memorize it. Now you can judge the size of anything without a ruler. I've used this my whole life to estimate distances of all kinds of things. Also pick a finger that is pretty close to 1cm or a joint close to 1 inch and remember which is which. You will never need a ruler to estimate again.

Make lunch for work the night before. Groceries are way cheaper than eating out every day - f**k anyone who thinks you're lame because you don't have a Timmyho bagel or BK for lunch everyday. I'm saving 4-5$ per meal. Not making lunch the morning makes the morning that much smoother.

Putting my clothes in my closet with the hangers reversed once a year. As I pull clothes out, I reverse the hanger. Every year I give away any clothes that I never took out.

If there's something big I want to get done, I tell all my friends I'm going to do it. The fear of looking like an ass helps keep me motivated.

Try to put yourself in as many socially awkward situations as possible. You will be desensitized to it which makes you more outgoing.

Back when I was 18-26, I always had one full bag packed in my car. It generally had clean underwear, a t-shirt or two, jeans, shorts, flops, and toothbrush/deodorant. I can't tell you how many times I'd just meet up with some friends and next thing you know it was 2AM and I needed a place to sleep. Having everything with me was awesome.

Putting socks on before pants. Socks are like pant lubricants. Believe it.

When you need to remember to bring something with you, put your car keys on it the night before.

Here is a lifehack for all of the students out there. If you are charged with writing a lengthy research paper, find one very solid source that directly pertains to your thesis, and then you can use that source's bibliography to back into locating new sources.

Always be ten minutes early to everything, no matter what; once it's a habit, you'll never stress about being late again. If something unexpected happens in transit, you're on time. Bam!

Take notes during meetings, even if it seems like something simple you will remember later. After 10 more simple things get mentioned, you start forgetting them.

If there's something I need to do but am procrastinating, I find something else I also need to do that's even more of a chore. I can then put off doing the second thing by doing the first.

To talk to people all you have to do is just ask questions. just let them talk.

I set up automatic bill payment for everything. I don't remember precisely when those payments will go out. The fear of a bounced check or declined payment keeps me from getting too close to a zero balance.

Place alarm clock across the room, so you have to get up to turn it off. Especially if you know you're going to have trouble getting up in the morning.

Applying an ice cube to a zit will reduce swelling and redness.

If I spend time looking for something, as soon as I find it and finish using it I put it back the FIRST place I looked for it.

On the ends of every box of aluminum foil there are tabs to push in that keep the roll from popping out; same for cling film. You're welcome.

Get an annual physical. A lot of generally healthy people overlook this, particularly if health insurance is an issue, but if you can at all afford it, do it. Small things like a chemical or hormone imbalance that you may not directly notice can have a big impact on your overall quality of life, and an annual check-up is great for prevention.

I use my refrigerator as a giant dry erase board. Rubbing alcohol can be used to remove permanent marker if you use the wrong pen.

When you wake up in the middle of the night to do something, cover one eye with your hand and leave it there until you return to darkness. The eye that was covered will have retained its ability to see well in the dark so you will not run into the dresser on your way back to bed.

While pre-gaming or preparing for a night out, ensure that there is at least a pint of fresh water next your bed. You are unlikely to think of this when you get in and it will help you immensely in the night/morning

Put a scented dryer sheet in the bottom of your garbage cans and change them every time you replace your garbage bags. Your garbage can will smell a lot nicer for a lot longer.

Squeezing your left thumb greatly reduces your gag reflex.

Babywipes for the bathroom. Seriously, your life will be +1.

Raising your arm high above your head will stop a bloody nose pretty instantly.

Before grocery shopping I take pictures with my phone of the refrigerator and food cupboards- so I can tell what it is I am out of.

Poop at work. You'll be using less of your own tp and more of your company's time. I started going into the john to play games on my cell phone for 5-10 minutes just to take a break; while I was in there I'd pinch one out. After a few weeks I realized that I hadn't replaced my own tp at my apartment in a while.

Live as close to work as possible. Even if you only commute a half-hour each way, that's an hour a day, five hours a week, over twenty hours a month. What would you do with an extra day every month?

Cover your pillow with a clean towel, and your acne will go away.