Jungling tips on how to get out of Bronze

I have been playing League for about 3 or 4 years now and I have lost all hope on getting out of bronze I play with higher elo friends such as gold or high silver and they all agree that I am a pretty good jungle and I should at least be silver by now. I can't help but feel ashamed they say that me being in bronze is all my teams fault but I feel like it is mine from all the tiny mistakes I make or that I just have hit a rough patch does anybody else feel this way on league? Or is it just me and I should get over it? But it would be hard to get over from all the hours I have put into the game itself and I have dreams of trying to join the LCS. I'm just gonna study the jungle more and try to find new path ways to be a better Jungler any opinions on how I feel?