Abnegate

verb to solemnly renounce or reject a belief, cause, or claim

• The defendant decided to abjure his previous statement and plead guilty instead.
• She promised to abjure junk food for a month, but ended up giving in after a week.
• I abjure that TV show, it's so boring.
• He abjured his old habits and embraced a healthier lifestyle.

verb to choose not to do or have something, especially something you like or enjoy

• It is important to abstain from making any decisions until all the facts are presented.
• I think I'll abstain from dessert tonight, I'm trying to eat healthier.
• I'm going to abstain from the drama and just focus on myself.
• Sometimes it's best to abstain from voicing your opinion and just listen instead.