Breastfeeding

Ladies. I have a family history of not being able to produce enough milk for baby.. Which scared me with my first child so i chose to formula feed. This time im damn well determined to breastfeed. Ive done countless research on it but reading only goes so far. So my question for moms is how can you produce enough and keep up production? Whats difficult? What have you found helpful? And what is just some things they dont tell you that youve come across?