Yes this works to manifest without having to do a ritual. You can even do this naturally and be surprised one day when you look around and go “wow, this is exactly what I always wanted”.
Not so much forget about it, as much as don’t “lust for results”. The idea here is that you don’t want to worry about it not manifesting, as that is the opposite of doing the law of attraction, but a common trap: you manifest that it doesn’t come. It’s the little and often approach vs the shock and awe, send all the energy on one go approach. For some people, not thinking about it is easier than trusting it will happen.
There’s a good discussion about this issue here: