#1: Make sure it's something you truly love
#2: Understand that even in the things you love you'll have to do things you don't enjoy (until you can delegate them)
#3: Look out into the future 3-5 years. Make yourself relevant/upskill for that future TODAY (or the job you love, could become the job you hate or no longer have)
#4: Stay ridiculously curious. The best people in your industry are learning machines. Be one of these. You can do this through getting mentors, reading books, blogs, videos... whatever it takes!
#5: Don't work with jerks.
#6: Learn to separate yourself from the work. Master separating your mind/emotions from your work. If you don't learn to do this, stress & anxiety will eat you up. Meditation is a good place to start.