True wisdom indeed. So many of our "problems" are really just mind-made drama we inflict on ourselves. We limit ourselves in our life based on some preconceptions of how "things should be" or how we think others "expect us to be".

Loose the past and all it's burdens without hesitation.
Stop worrying about the future; just be, get ready, and watch it come, instead of being mortified.
Enjoy the little things everyday instead of waiting the whole life for the big thing to come.
Finally, remember that happiness is inside you, it's unconditional, it's a state of mind rather than state of the world. Nothing external can bring you lasting happiness, only you can!

Best