I didn't want to jerk off to porn for the rest of my life, and wanted to have sex with actual girls.
Okay, gotcha. The idea I'm trying to bring out is
why do you want to have sex with actual girls? Do you just love the feeling of your dick in a wet pussy? Is it something more intimate than that? Is it to prove to yourself that you can grow and conquer challenges? Find that source and hold onto it. That's where the inspiration lies. If you're uninspired to take action in a certain direction, it can be very difficult to get started again.
Sometimes I look back at my old writing just to remember why I'm doing what I'm doing in the first place - then the action of doing it and putting effort in becomes much more natural because
I think I have a good reason for it.
Likewise, when I'm working on a tedious work project or typing up the less-than-enjoyable parts of a research paper, I have to remember that there is utility in what I'm doing --> this all sets me up for my dream job many years down the road.
When it feels hard to approach girls again for whatever reason, focusing on the utility of it and why you should be doing it, or want to achieve X can usually overcome things like being unmotivated or rationalizing your way out of something.
Hue