Ask HN: Has anyone here turned around their life in their 40s? 4 years ago
Therapist, excercise (3+ weekly), eat better (protein+veggies are the base of this) and quit alcohol. I did all of these in my late 30s and in my 40s and I feel younger. When changes you can make alone are not enough, therapy (and possibly meds) should do the trick. best of luck, and a strangers hug