Nice article from Lifehacker on the list by Marc and Angel come up with an amazing list of 30 things to stop doing to yourself.
#10. Stop exclusively looking to others for happiness. – If you’re not happy with who you are on the inside, you won’t be happy in a long-term relationship with anyone else either. You have to create stability in your own life first before you can share it with someone else.
I also like #22
#22. Stop overlooking the beauty of small moments. – Enjoy the little things, because one day you may look back and discover they were the big things. The best portion of your life will be the small, nameless moments you spend smiling with someone who matters to you.