沾沾自喜 [- zhān zì xǐ]pleased with oneself; grandiose; pat oneself on the back; play the peacock; priggish hug oneself on [for; over]; self-contented; smug; well-satisfied; feel complacent:
•¶ 不要沾沾自喜于一得之功。 Don't be complacent over occasional success.; Don't feel self-satisfied over a minor success.