All the symptoms you have mentioned are pointing towards a dysfunctional executive circuit in the brain. What I mean when I say executive circuit is one’s ability to attend task, comprehend, memorise, recollect, perform, respond etc.
This dysfunctional circuit could be secondary to many psychiatric disorders like depression, anxiety to name a few.
All these circuits are governed by neurotransmitter like serotonin, dopamine and norepinephrine primarily.
Its lack in brain leads to symptoms, thus medications that balances the imbalance will help you recover.
Next Steps
Given the long standing history and symptoms of you haven’t consulted a psychiatrist, you should get yourself evaluated.
Health Tips
Stimulants over and above SSRI will be helpful. Psychotherapy may aid in improving coping to external stress but medication must be first line management.