Is it a sin to live life with only entertainment as motivation?

Well, been thinking about life now considering I have to find a job sooner or later. But it's not because of that. And yes, it's about that project. I think I noticed I can't handle solo projects if I'm given the part-time method of dealing with it. Chances are if I can focus on one at a time I will do better, as seen in my internship last year. I don't know. I just think I don't have enough of anything to keep me alive now that something of reality just hits me. And it's not the first time.