Hi, and thank you for contacting Just Answer - You did
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OK.. I see you are off line - let me go ahead and see if I can answer with what you have posted so far.
I think I can help you here. One of your answers is yes there are assessments to identify even small issues and even if an issue doesn't rise to the level of being "clinically problematic" it would give you some idea of what's going on with you and where you stand. For instance, there is the Beck's Depression Inventory (BDI), several personality inventories, and so on...... And you can certainly go that way if you wish - Of course administering assessments goes beyond the scope of what this question and answer website can do.
Having said that....... I would like to suggest that you have already identified some of you issues. And you asserted that your issues are small, but you are feeling a little overwhelmed by the "quantity" of issues.
In my experience in my practice you sound a good candidate for a "Solution Focused" approach.
So... I suggest that you choose one (two at the most) issues that you would like to see improve in you life. The start to recognize times when those things are going well. It is well documented by Solution Focused Counseling research that once a client starts to have success in one area of his/her life that other things start to get better as well.
The philosophy of Solution Focused Therapy is to recognize when things are going better and do more of what works - this will "push out" what is not working if you will.
I suggest the first thing is to become familiar with Solution Focused Therapy - you will very clearly see how to apply this yourself.
I think this is a very good strategy for you given what you have posted.
If you have more questions please post them here - however, if you are satisfied with my efforts, please click on the green accept button.