Only 5 percent is actually, in some simplistic way, fun. In school that is what you focus on; it is 100 percent fun. Tick-tock. In real life, most of the time there is paper work, drafting boring stuff, fact-checking, negotiating, selling, collecting money, paying taxes, and so forth. If you don’t learn to love the boring, aggravating, and stupid parts of your profession and perform them with diligence and care, you will never succeed.