Finance - Which to pay first?

I had a lot of issues due to my loans back in the day. I think one of the most important lessons I got was to not overdo it. I also relied a lot on credit cards and short term loans in order to enjoy my life at the fullest. There was a time though that I struggled a lot and I started reading books. If you have a look at some of the best reads you will realize that the I am a mastermind when it comes to investing.