How to get better at decision making?

How do I get better at decision making? I get stuck with daily things as wells more below

Example- I need to do law school apps but have my real estate midterm tomorrow which doesn’t count for class or license. I’m also dealing with some chronic pain that’s debilitating and am in PT. So Saturday I decided to clear and little bit clean my office space so that I could sit down and do my law apps and study a bit. It took the whole day because of spending hours getting pain in order to get to functioning level. Thought I’d do it Sunday then and Sunday came and I was completely dysfunctional with more pain.

Finally had 2 hours left until thr weekend is somewhat over and couldn’t decide whether to do law app or real estate?

Another scenario: books. Love reading, terrible long term attention span. I’ll be very interested in a book an excited to delve deeper only to lose interest after 2 chapters, these are to do and non fiction books that I read for knowledge. I haven’t exactly lost interest it’s just that I found more new topics and books to delve into. I decided I’ll read on rotation but then there are days I don’t know what to read? Like I want to read them all? At the same time?

Help, cos I suck at decision making. Curious to see how someone else would break down these two examples in these two particular scenarios. Thanks!!