What if we were able to train ourselves to desire only things that are firmly within our control? Then, in a very real sense, we’d always get what we want, and never get what we don’t want. Our happiness would never spill, since the cup of our desires is reliable and holds firm.

Massimo Pigliucci and Gregory Lopez, A Handbook for New Stoics: How to Thrive in a World Out of Your Control—52 Week-by-Week Lessons [Amazon, Bookshop, Publisher, Local Library]