When, if not now?

Life is given to us alone, at least in the consciousness that we are now. You start thinking about this usually in difficult moments. But at some point it will be too late to think about when our soul will cross the border of heaven and earth ..
And then, everything will be meaningless, then nothing will matter. So when, if not now?
To live .. to breathe deeply, to be happy, to commit crazy acts, to love so anxiously and strongly choking in emotions .. What would the heart go into the heels like a roller coaster.
We must be happy, listen to our heart against all things .. We have too little time ..