I was in a similar situation a few years back but my weakness was calculus. I really had no grasp of what it was used for until I had to learn as part of my wor

I was in a similar situation a few years back but my weakness was calculus. I really had no grasp of what it was used for until I had to learn as part of my work. I was on the brink of losing my job if I hadn't. I had a very patient boss as mentor who spent hours teaching me the practical applications of it - remotely over phone. Now I love calculus. So I believe the best way to learn math is by finding areas where you are forced to apply it. And it is never too late. I learnt most of it after turning 30.