Foot problem

I have really sweaty feet, and although I wash them frequently to minimise any bad odours, I can't understand why I have this problem. Hot weather is obviously when this is affecting me most, but my job means I am standing on my feet all day which doesn't help either. I think that I must have overactive sweat glands or something which I don't think I can do anything about, but if anyone else knows a way to reduce this sweating then please, please let me know. Although I know that other people don't have a clue about this problem of mine, I still feel embarassed and uptight about the whole thing. Thanks.