Abundance versus scarcity – more information where please

Hi, I have been exploring my thought of ‘I’m not good enough’ or “I don’t have enough” or “I don’t deserve XYZ” in thought downloads. I notice it comes up in lots of areas of life. I would like to do some reading around an ‘abundance’ versus a ‘scarcity’ mindset. I’m sure I have seen something around this topic in Scholars but cannot remember where. Please can you advise?