Purpose of Brahmacharya

Hello,

first of all thanks for answering questions. Not everywhere you can ask about this topic and get honest answer :)

I am on my second stretch of abstinence. First one I went close to 120 days and now I am near 70th. As time passes by I wonder more and more about it's true purpose. Could be that celibacy meant to achieve something bigger then yourself? Like some goal that person views as life long big (for example I have nagging thoughts on such a creative project for awhile)? Like wouldn't be a waste of effort to not try to accomplish such a goals that leads to greatness? I hope I expressed myself clearly.

Thanks