When I was going through a similar questioning of what I wanted out of life, I found a book that really helped me, so I registered here so I could give you the title to look up & see if it might be helpful for you, too:

BooK: Dare To Be Yourself

Author: Alan Cohen

It really made a big difference for me, is an easy read, and uplifting while giving great advice at the same time.

As far as wondering if you should end your marriage, my mother always told me to ask myself, “Would you be happier without him & having all your same (other) problems, or with him by your side to be your partner through life?” Many years later, we are still together & stronger than ever. Don’t stay if you truly aren’t happy with him; but don’t throw him away by mistake, when you are really just needing to ‘find yourself.’ This book helps with that. Good luck with whatever you decide!