You can't do everything you want to do. First thing is to realize if you are working a full time job, you can't really do much else. If you have a full time job and children, don't really expect to do anything more than that. if you want to do something else - you need to get rid of children for a while (parents/boarding school) or quit working.

One thing I've stopped doing is shopping around for the best possible price bargain. I spend hours and hours to get the best laptop I could get for a price. If I just paid a few hundred dollars more I would have a better model and saved myself a literally a week's worth of work.