If one allows his mind to think in a way that everything one imagines tends to have a negative outlook and is based on illusionary perceptions yet doesn't have any evidence to prove it is true so then starts implementing habits that seem to be "dopamine material" for this person when it actually isn't, then there is a demonstration of "corruptive thinking". In opposition, one who bases his thoughts on a realistic and logical iteration where these illusions are false and affixes himself on a path of a personal paradigm shift with the use of encouraging internal chatter, then this person has built his mind constructively and effectively.