Bowen impressed in last night's friendly win against Bosnia.
"Speaking personally, I think I’m here on merit for what I’ve done since I’ve been at West Ham and it’s about finding that balance where, yes, you want to impress, but you also don’t want to try and do too much,” he told Sky Sports.
“I don’t know if I’m a better player, but I’m just more mature as a player and I think that comes with age, with the games that you play and confidence from the games that you play and every opportunity you have here (with England), you gain confidence from it,” he explained.
“I think that I’m not in a different headspace, but more mature as a player and more comfortable with these big occasions. That was only my eighth cap, so I’m still fairly new, but I’ve been in and around camps long enough to know what it takes to play at this level. So, as I said, every time I get this opportunity it’s about doing everything I can to get in the squad that I didn’t manage to before.
“Of course it (not being selected for the World Cup) makes me want it more, but I’ve got to find a balance like we just spoke about of not doing too much. The group we’ve got, the players and the coaching staff, make you really welcome so it’s a great group to be involved in. We’ll see what happens on Friday.
“We have one more game before that (against Iceland) which will be a good test before the first Euros game and these games are important to gain confidence and get the good results and good performances.”