“ Everybody in the world is seeking happiness- and there is one sure way to find it. That is by controlling your thoughts. Happiness doesn't depend on outward conditions. It depends on inner conditions. ”
Source: How to Win Friends and Influence People
Is there a difference between happiness and inner peace? Yes. Happiness depends on conditions being perceived as positive; inner peace does not.
Stop giving other people the power to control your happiness, your mind, and your life. If you don't take control of yourself and your own life, someone else is bound to try.
Free from expectations and the sense of ownership, with mind and intellect fully controlled, they incur no sin, even though performing actions by one's body.
Everything in the outer world that had promised great happiness has deceived me, but one thing has never deceived me — my inner peace
Action may not always bring happiness, but there is no happiness without action.