Richard Feynman: "The first principle is that you must not fool yourself, and you are the easiest person to fool."

The biggest investment in your future is the work you do on yourself today.

One day you will realise that for your life to change for the better, you must first change for the better.

What you do in the dark is what defines you in the light.

The most valuable investment you make is in your own development.

We change because: we’ve learned a lot or we’ve suffered enough or we’re sick of the same old shit.