Welcome on board Shard!
There are a lot of people on here who are in a similar situation, myself included. It is common to get hung up on one particular girl, and strive to impress only her, but as you say, you have made what could be considered the hardest step, and are ready to make the changes now to move forward. Best of luck to you on the journey!
I'm new to this too so will message to get group together in London soon (going to be in Germany for a bit so will sarge back here again when I get back)