Everyone learns in different ways. I remember when I first started (I was 18) and I was terrible at making chords, strumming, and rhythm in general BUT I was good at playing scales and lead guitar.

What I ended up doing was dwelling on what I was bad at and I gave up for years.

It wasn't until I found a great teacher and he got me back into playing. The key is to focus on your strengths and slowly work on your weaknesses. So I played lead guitar more and I spent about 15 minutes each day where I was weak and eventually I got to where I am now.

I say give it a try again if you still have the guitar.