I have a partner but no kids, have no idea how it would be possible if I had them. Due to lack of free time and sport injuries my hobbies have mostly reduced to frequent travelling. Since I travel I barely have any friends, so I don't spend any time with them.
I try to exercise regularly, exercise takes time but it pays off for my energy levels and decreases stress.
I have recently self-diagnosed myself with ADHD, sitting idle and just relaxing produces too much anxiety, so I have to jump back into doing things. Another important thing for motivation is feeling that your work is meaningful and that you can influence the product. Being a cog in a big machine implementing what other hand down to me would have brought a feeling of helplessness.