The most important part of the Let Them Theory is understanding that you are responsible for your own happiness. You are responsible for the energy you bring and how you show up. You are responsible for waking up every day and doing the work to make progress on what matters. You are responsible for defining what matters to you. You are responsible for telling the truth even when it’s really hard. You are responsible for paying for your life. Nobody owes you anything, but you owe yourself everything.