What are your top twenty life hacks ?

After college, once you get the first job, start looking for a better job after a year or two. Don't stay out of loyalty.

If you are buying headphones/speakers, test them with Bohemian Rhapsody. It has the complete set of highs and lows in instruments and vocals.

If someone tells you they don't drink alcohol, don't ask them why.
It's probably for a personal reason, and may be because they're an alcoholic. In any case, it isn't any of your business.

If you like one song by an artist, but don't dig the rest of their stuff. Find out who the producer is and see what other work they've done. The producer can play a big role in how the final song turns out.

If your fire alarm goes off, call your pets and give them a treat. Eventually they will come when the alarm goes off, saving you from wasting time looking for pets during an evacuation.

Whenever you make eye contact with someone randomly, just smile! They'll most likely smile back and that just makes the world a little bit happier.

Always be the person who tells someone they have something in their teeth, shoes untied, fly is down, etc.
I have done this my entire life and people are almost always extremely grateful. It can be a bit awkward but if someone walks into a meeting or starts a conversation with me and I notice something like that, I will immediately interrupt them to let them know.

Stop comparing yourself to others. Instead, compare yourself to where you were 1-2 years ago. Whether it's fitness or finance, use that as motivation for your own goals.

If somebody comes to your door selling a home security system and asks if you have one, always say yes.
If they ask which company, tell them it's none of their business.

Many people looking for homes to rob will come to your door asking about security systems. It gives them a chance to case the home and look for weaknesses like if you don't have a dog or if the house is homed by women or the elderly.

Always say goodnight to your SO, even if you're upset with them.
Taught to me by my parents, I do this in my relationship. Telling your SO goodnight especially after a fight tells them that you value your relationship more than you are upset about whatever thing is making you upset.

Dont worry about something embarresing you said or did in the past. Nobody thinks about it as much as you do until you mention it.

If you accidentally press the spacebar and scroll down the page, you can press Shift+Space and go back to where you were.

Pay Attention to the smell of your home when you come back from a trip - that's what it smells like to guests all the time, you just get used to it.

Follow the 2-minute rule. If it only takes 2 minutes to do, just do it.
If you're a big procrastinator, this is a great and easy way to start fixing that problem. If it's something like taking out the trash, folding some clothes, or putting the dishes away, do them right there and then and don't put it off. If it only takes 2 minutes, get it out of the way!

Want a good dog? Take them with you everywhere you go. There is a reason that dogs of street people are amazing, and cooped-up condo dogs are hyperactive spaz dogs.

When someone compliments you, it's okay to just say "thank you." You don't have to give them the same compliment right back.

Before checking in at the airport. take a photograph of your luggage. A picture is worth a thousand words if your bag gets lost!

When buying a blanket, always buy at least one size larger than your bed. It’s at least a hundred times more comfy.

Complete a simple task like making up your bed or preparing an actual breakfast when you wake up in the morning. The feeling of even the smallest accomplishment has been proven to make you more productive during the day.

When somebody is going through a hard time, it's better to ask questions than to give advice. If you ask questions, you will help him/her talk through the problem. If you give advice, s/he will politely nod along, but s/he will feel kind of empty inside bc what s/he really needs is to talk.

If ever you need a program you want for free (for example a video/photo editor) don't search for "free", search for "open source" to avoid limited trial versions, adverts and malware.

If you want to divide something among two people (usually kids), you get one person to divide, and the other person gets first pick on which piece they want. Everyone wins and it ensures the person who divides is fair.

When walking your dogs, make them sit and wait before crossing streets. This will make them hesitate about running into roads if they ever get loose.

Bring a healthy snack to work. If you're looking for a snack but don't feel like eating the one you brought, you're not hungry you're bored.