Each thing we do is influenced by prior things we have done. They stack up. And, we lose track of the prior things and how they affect us. If there is one piece of advice that subsumes everything else, it is DO GOOD. You are making your future self.

Ignorance is the worst of sins.  The ignorant are not aware of the price of their actions .………. everything in this life is paid for.

Alberto Garcia, The Philosophical Inn – https://medium.com/the-philosophical-inn

That’s not a warning so much as a statement of how one thing follows another. What you do now influences what you will do next. If you are unaware of that relationship, you cannot see, or give credence to, how it affects you.