I say train the mind too. When I was in the worst low of my life I made my self read “meditations” by Marcus Aurelius, or “the manual” by Epictetus for 15 min before lifting. If you lift at home you could read in between sets. These two books played such a significant role in the reshaping of my mind and outlook.
As cliché as it is coming from the nurse, but holistic approach is best approach in my opinion. Training the mind (reading, learning, discovering new interest) is just as important as getting under the bar.
On average I read 60-70 books a year and it’s the best thing I’ve ever done for myself.