Agree or disagree that the happiness of your life depends on the quality of your thoughts?

[Starmix]

I strongly agree that the happiness of our lives depends on the quality of our thoughts. We notice that if we keep on thinking negatively, happiness passes by. Your mind only navigates on something that makes you unhappy like why others are rich and you poor. But if you delve into something inspiring then to follow will be sudden happiness. The power of our mind is amazing if only utilize it well.