"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." -Reddit user kpberry
"Here is a life hack 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." -Reddit user Fonix79
"When you need to remember to bring something with you, put your car keys on it the night before..." -Reddit user drewlb
"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." -Reddit user elblanco
"When I drop something fragile (glass, etc.) I kick my foot out to softly break its fall, works 90+% of the time. I've even caught some items and balanced them on my foot." -Reddit user dankpants
"When you park at a huge parking lot, take a photo of the nearest parking location sign with your cellphone camera.
That way, you won't forget that you parked at H43 near the East exit and wasted 30 minutes trying to find your car." -Reddit user GeorgePB
"Whenever I'm feeling nervous about meeting someone or talking to a girl or something, I just remind myself that 100 years from now, what I say to this person or what I do won't matter anyways because we'll both be dead.
It may seem weird, but I guess it just reminds me life is too short to be worried about little things like that." -Reddit user poopinmysoup
"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!" -Reddit user (deleted)
"I had late fees for movies, so I told them I lost them. They wiped the late fees and put the cost of the movies on my account.
Then I brought the movies back, saying I found them. No more late fees." -Reddit user Flamanator
"If you need to pack clothes, sleeping bags, duvets, or similar, put them in a big plastic bag and use a vacuum cleaner to suck the air out.
You are using the whole atmosphere to pack your duvet densely." -Reddit user arnedh
"If you get someone from a call center on the phone for whatever reason, talk to them like you'd talk to your best friend. Be casual, and don't hesitate to joke with them.
They spend every day talking to people that are pissed off for having waded through 5 minutes of automated bullsh*t. You being cool will be refreshing, and they'll probably be more eager to help you." -Reddit user jotate
"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?" -Reddit user mechanate
"Carry a pocket knife. They're just bloody useful.
I like this one: it's cheap, durable, clips to a pocket, and you can just swap out the blade for a freshie as necessary..." -Reddit user BeardedGourd
"If you have goals for yourself, set constant and clear reminders for yourself.
These frequent reminders will be crucial in keeping you on track." -Reddit user cmunerd
"Visine will also stop bleeding on small cuts.
Keep a bottle next to your razor." -Reddit user (deleted)