"Have to" is a phrase that I have tried to eliminate from my vocabulary. Irrespective of what I'm doing, whenever I think that I "have" to do something, that something becomes onerous, aversive, and unpleasant. Instead, I try to replace the phrase "have to" with the phrase "choose to," and to connect the duty, responsibility, or assignment with one of my personally-relevant goals. It's a small change that makes a big difference.