Playing for Britain in front of 4,000 fans was an unbelievable experience. Getting involved in things like the Davis Cup and ATP tournaments has always been one of my goals. It's given me more drive to get involved at that sort of level more regularly.I look at Andy and Jamie, guys who I've grown up with, and I think, 'They lived half an hour up the road from me. They had the belief to make it. Why can't I? If I believe in myself and give it a go, why can't I get up there?' I'm not saying I can be anything like as good a player as Andy Murray, but what he's achieved does encourage me to give it a go.I felt I'd got to the stage where I wasn't progressing. At that stage I had no intentions of ever playing full-time again.I was enjoying my job but I started to feel that I was still young, was capable of playing sport at a reasonably high level and wasn't ready to give up on that. I want to give it everything this time around. As long as I'm improving I'll stick with it. I'm not just going to give it a year or two. I want to make a career of it.It's certainly less common for someone to peak in their mid or late twenties, but it does happen. Several players have gone to university in the States and then picked up their careers, although people like John Isner and Benjamin Becker did so with the aim of playing a lot of very competitive tennis there and then leaving to play full-time. I went to university to get my degree, though I chose Stirling because it gave me the opportunity to carry on playing tennis at a decent level. What I have on my side is that I'm a pretty late developer. When I went to university I definitely wasn't ready for full-time tennis.