Neville recommends at the end ...

Neville recommends at the end of every day, before you go to sleep, to think through the events of the day. If any events or moments did not go the way you wanted, replay them in your mind in a way that thrills you. As you recreate those events in your mind exactly as you want, you are cleaning up your frequency from the day and you are emitting a new signal and frequency for tomorrow. You have intentionally created new picture for your future. It is never too late to change the pictures.
Neville recommends at the end of every day, before you go to sleep, to think through the events of the day. If any events or moments did not go the way you wanted, replay them in your mind in a way that thrills you. As you recreate those events in your mind exactly as you want, you are cleaning up your frequency from the day and you are emitting a new signal and frequency for tomorrow. You have intentionally created new picture for your future. It is never too late to change the pictures.

Quotes from the same author

However, when we shift our awareness or "frequency" from self-consciousness - where fear, impossibility or feelings of separation reside - to cosmic consciousness, which is in total harmony with the universe and where none of those feelings exist, then anything is possible.
Thoughts are magnetic, and thoughts have a frequency. As you think thoughts, they are sent out into the Universe, and they magnetically attract all like things that are on the same frequency. Everything sent out returns to the source - you.
You can change your life, because you have an unlimited ability to think and talk about what you love, and so you have an unlimited ability to bring everything good in life to you.
Decide what you want ... believe you can have it, believe you deserve it, believe it's possible for you.
You have the ability to give so much to the world by emitting feelings of love and well-being, despite what is happening around you.