I Have Really Low Energy, Sleep Problems REM,cannot Focus Or

I have really low energy, sleep problems REM,cannot focus or complete a task. Although, i was treated for AdHd when I was young adult with stimulant meds, I felt like biofeedback techniques could help me and I DCed the adderall when I was in graduate school. NOW I FEEL LIKE I'm back to square 1. WHAT TO DO?