As I've written on multiple threads before...I've been "around" for quite awhile. And, as a swimmer and a gym regular, I've been in locker rooms pretty much daily (or multiple times per week) since I was a kid in middle school...and mostly in places with open showers. So, I've seen thousands of cocks. And, seriously, there are very few monsters---even though places like this site would lead you to believe that everyone is "bigger than you". The guys who plump themselves up before they take their shorts off---or in the showers while soaping up---are in the same boat that you are. Just like most of the pics on here, as well. They have been made to feel inadequate.
And, don’t get me started on gay porn. After living in LA for many years—and knowing a few porn stars myself—I know how that game is played as well.
Yes…a bigger cock does often give certain guys more confidence than they would have had without it. And, cocks do seem to be getting genetically larger today than they were when I was a kid. But, I have seen just as many guys with “average” equipment have just as much confidence—or more—because they are not focused on their cock as much as on what they accomplish outside of the showers and saunas—at the gym, or at work, or with hobbies, wherever. They walk around the locker room proudly—even when flaccid. It’s not all about your dick.
Celebrate yourself…not your cock. If you’ve got a big one…great! If not, find whatever else is “big” for you, and focus on that. You can get confidence in so many other ways.