Life isn't fair. Even if you treat others well, don't expect the same in return.
You must always trade what you want now for what you want in the future.
Most people don't think about you as much as you believe. You greatly overestimate their attention to your actions.
You will lose yourself in the process of trying to please everyone. So do not do that!
Comparison steals joy. Constantly measuring yourself against others is unhealthy.
Building a business is risky but so is living paycheck to paycheck. Choose your risk wisely.