The three-way fight to start in the World Cup finals remains in the balance, with Hart vying with David James and Rob Green to get the nod.
Green started Monday's 3-1 friendly win over Mexico, with Hart winning only his second cap as a second-half substitute at Wembley.
Hart, who spent the season on loan with Birmingham, never thought he would be in the England frame, but is not settling for being a squad player.
The 23-year-old feels he has learned a lot from his rivals and that has given him even more confidence that he can shine this summer.
"I always thought I'd just be a fan this summer, I never thought I'd be involved in anything like this," explained Hart.
"But now I'll just do everything I can to catch the manager's eye and get a few more caps.
"Greeny and Jamo have great experience over me and I'm looking to learn off that.
"They are good people to be around. I felt confident against Mexico because playing with great players gives you that confidence.
"Things are very intense under Mr Capello. Everything revolves around winning and that's where he shines as a great manager."