You are not responsible for anyone else’s happiness.
Being responsible for yours is anyway tough.

To stay happy is the most meaningful task. A task that requires effort.

To keep others happy is the most overrated task. Because happiness is a choice you make, not a pill you can pop on anyone giving it to you.

The world will question you despite you trying to keep it happy.
Why not stay happy yourself, and let the world choose – either to continue questioning you or to partake in your happiness?