I think this is a good idea ... but a difficult one !
Are you sure you want to give everything ?
Maybe you could try to keep some, but with limits, like saying "Ok, I keep only THREE dresses, only THREE pairs of shoes, only THREE bags", and this involves EVERYTHING (sport shoes, evening shoes, everyday shoes) !
I don't know, i am just saying. Your idea is a good one - to start over -, but for me I know it would be too difficult, there are many clothes I don't wear but there are also many I do actually wear and that I would regret not having if I give them away