It is absolutely true!
Check my experience 🙂
My dad used to tell me this all my life whenever i simply sit back home doing nothing at all… Actually I used to go mad sometimes whenever dad told me to indulge in something rather than simply sitting and keep on staring at wall.
I was simply wasting my time and soon disturbing thoughts started to disturb me and i became agitated towards everything family, friend and so on. After some years when i became a part of a large community and because of lack of free time and lack of time for spending, for idiotic thoughts problems soon itself part away from me. . .and i end up being a happy man! 🙂
What do you think!