How can you stop People pleasing?

I just read a quote online that says in order to build self confidence, we need to stop self doubt, stop trying to be perfect, and stop People pleasing. HOW do you stop trying to please others? I've done it for YeARS, it is just absolutely a default for me. Think of others first was engrained in me very young. (or else I was selfish, or a 'bitch'). How can you stop actually people pleasing, I often wonder???????