Русско-английский словарь пословиц и поговорок
ЧЕГО ХОЧЕТСЯ, ТОМУ И ВЕРИТСЯ
People are inclined to consider that things are or will be just as they would like them to
Cf:It is easy to believe what you want to (Am.). Men believe what they will to believe (Am.). We soon believe what we desire (Am.,Br.). The wish is the father of the thought (Am.). The wish is the father to the thought (Am.,Br.)