To let go means to give up coercing, resisting, or struggling, in exchange for something more powerful and wholesome which comes out of allowing things to be as they are without getting caught up in your attraction to or rejection of them, in the intrinsic stickiness of wanting, of liking and disliking.

Wherever You Go, There You Are: Mindfulness meditation for everyday life (ed. Hachette UK, 2016) - ISBN: 9780349414232