When you quit arguing for why they cannot happen.
When you vividly imagine a world in which they exist.
When you get out of the way and just think about something else while manifesting is happening.
When you let yourself off your personal hook of feeling you don't deserve it.
When you let yourself off your cultural and societal hook of feeling you don't deserve it.
When you quit falling for false propoganda that says there are all these conditions that must be met before you can have the great good fortune of manifesting what you truly desire (conditions that in truth have nothing to do with such manifesting and usually get in the way).
When you accept that your Higher Self knows better than your mind what is good timing, and what you need to do or be to prepare to receive.
When you develop the habit of being happy with the great good that is already yours.
When you laugh with a light heart if others scoff leaving them wondering what is deeply wrong with you, and that is fine with you for them to think that.
I know you already know all this, but just in case you forgot something crucial . . . .