Carrey wrote a check to himself for 10 million dollars, dating it to give him a deadline (3 or 5 years) to “make it”. Keeping this check in his wallet, he used visualization as a tool to “bring out” the reality that he wanted. Eventually, he was able to cash that check by the date he wrote on it.
The only people who are going to “make it” in any field are the ones who are trying to “do it”. A record contract won’t just magically fall in your lap without writing any songs or playing any shows. You dress for the job you want, not the one you have. The same goes for preparation and presentation. Visualize your success, mark the path, and do the work. Yes, right now people may call you crazy and a wishful thinker, but how can you expect to make it without doing it? Just wishing for things won’t make them come true, and just doing things aimlessly won’t work either.
And even if its all placebo, if it works, why not?