Can someone teach me the ABCD of manifesting

Hey guys, so I've been around for a while and try to get to know abt the law of attraction and assumption, I've read 2 or 3 books and I basically understand that we need to imagine ourselves already having it and believe that we already have it and it is done so, but I've tried to test things out, particularly on short term, like 2 or 3 days and it doesn't seem to work out, can someone teach me how to do the whole thingy, I don't wanna go deep into the books for now