1. Step outside of your comfort zone.
Challenge yourself to do things you normally wouldn't do. Whether it's befriending a stranger, texting that boy you have a crush on, or speaking your mind, start taking risks. Don't think about what could go wrong. Instead, think about what could go right.
2. Start a new and healthy habit.
3. Do something nice for someone else everyday.
Start being selfless and considering the feelings of those around you. Sometimes something as simple as complimenting someone's haircut or outfit may completely make their day. You could always consider anonymously paying for a stranger's meal. The smile on their face when they realize the kind deed committed by a stranger will, perhaps, brighten your mood even more than theirs.
4. Change someone's life for the better.
Get involved in the lives of those around you. Help people who are in trouble without expecting anything in return.
5. Travel somewhere you've never been before.
What's the point of being alive if you aren't truly living? Go out and experience the world. You only have one life, you might as well make the most of it. Traveling is arguably one of the best ways to get to understand and experience the world around you.
6. Learn something new.
Learn a new language, a new skill, or a new talent. Broaden your knowledge and expand your horizons.
7. Try something new.
There's some things in life that we have to take advantage of and experience while we are young and able. Go skydiving, hike to the top of a mountain, go parasailing, paint a canvas, run a marathon... the options are endless.
8. Volunteer somewhere.
Take advantage of volunteer opportunities both in your community and world wide. Personally, I want to volunteer in a third-world country.
9. Keep a list of all the great things that 2017 brings.
Keep a list of all the things and people that make you smile in 2017. It's important to remember and appreciate the good things in life. At the end of the year, look back at your list and reminisce about all the wonderful things 2017 brought.
10. Write a letter to yourself.
Write yourself a letter and put it in an envelope. Keep it somewhere safe that you won't forget about it. Talk about whatever you want! Your favorites, least favorites, goals and aspirations, friends and family, where you see yourself 10 years from now, etc. Have the "future you" open the letter in ten years. You'd be amazed how much has changed!