Be truth to your heart

I feel like i am getting stupid these years. In scientific term, my IQ is negatively correlated with my AGE.

Even in my 26th year of existence as a human being, I still not following the simplest rule of being, living, and believing. That is, be truth to your heart, be truth to what you like, to what moves you, to your passion, to what you love.

That is what I (We) care deep down in my heart, and the only way to true happiness.