Exploit development is a really great topic.
The best decision I have made so far.
I tried to do that sort of thing 8-10 years ago, but that was the script kiddie me... To that comes that that my attention span was very low. That is showing the state of my low will power.

You really got to hang in there to go further.
Without extreme will power, you simply won't make it. You will become very frustrated. That's normal. Just never give up on it. Keep retrying. In the end it pays out.
It has a steep learning curve, but in the end you learn so many fricking things.