To me, this is a question of learning new behavior. Which isn't necessarily an easy thing.
I'm thinking like this:
If you want to change your life by finding and solving problems, you will learn all about problems, how they look and how they feel. You will define your world and the situations you are in based on what problems there are and how big they are, and you will probably discover new problems that you have not seen before, or find that problems that initially seemed small, actually is, or has the potential to become, much bigger.
With a focus on problems you can become an expert at finding things that need to be changed, improved, terminated or removed. You learn what to avoid.
If, on the other hand, you choose to change your life by finding and reinforce the things that work, you will learn what solutions look like, how they feel and how their internal machinery work. The more you train yourself to see solutions, the more and better solutions you will discover and you will describe your world in terms of its solutions and potential solutions rather than what problems exists. Most likely you will be surprised by many things that work, how well they work, and how much potential there is for things to work even better.
With a focus on solutions, you become a master at finding things that work, that you want to do even more, or things you can use to make other situations even better. You will learn which situations and people you should approach and what strategies and patterns of behavior you should strengthen.
With a focus on solutions, you get one or a few clear goals to pursue and directions to go. This is seldom or never true when you have a focus on problems. Instead of a few clear goals, you usually end up with an infinite number of directions to go – all leading away from the problem.
End of sermon