I grew up in a similar household, except I am the father figure for my much younger brothers.
And I have Cannabis to thank for much of who I am. Shiva helped me be a good father, stoner, thinker, and doer.
Even years of battling the law, and struggling through family problems helped me.
Cannabis gave me a thoughtful mind, and gave me an outside look on everything happening to me.
Time in a cell was infinite. When you're in a cell you have always been there, and will always be there. There is nothing else, and never will be. You only hope for "The Free". But you don't think it will ever come.
So there is plenty of time for reflection, review, and planning.