The first step is to remember it and you can't remember anything without clues.
The second step is to give it time and force yourself to do it.
The third step is to treat it as if it were real and give it a picture.
We are more than one, each one of us is more than one.
And the last step is... always remember it. Give it time, give it all the time it needs, but never forget it.
Oh, and the truly last step is... Assume it exists. You can't live without assuming it exists.