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Recognize the signs of a toxic friendship. Be honest about your reasons for needing to end things. Cut off ties with that individual
If your friend continues to disregard your feelings and speak/act condescendingly towards you, that individual could simply be a bad friend. This isn't necessarily something your friend is aware of or doing intentionally. However, if repeated attempts at talking about the problem haven't fixed things, you may need to walk away. Some signs that your friendship might be toxic include:  an imbalance in your friend's willingness to listen to you or hear about your struggles and accomplishments a power dynamic wherein your friend never calls or contacts you, and you are always the one who has to initiate conversations and get-togethers feeling like you have to walk on eggshells to avoid upsetting that friend feeling like your friend puts your emotions through tremendous ups and downs for no real reason Lying or avoiding the issue of your friend's condescending behavior isn't doing that friend any favors. Your friend will probably continue to have those problems with other friends, family members, and perhaps even colleagues. If you've decided to end the friendship, it's important that you do so in person (in a safe, neutral space) and let your friend know why you're ending things.  Be honest and direct about what you're doing. Say outright, "I don't think I can be your friend anymore - at least not until you work on this problem." Letting your friend know that the condescending behavior is the problem could potentially leave the door open to a future reunion if your friend works on those issues. . Once you've decided that a friendship is irreparable and you've let your friend know that you're ending the friendship, it's time to actually put your intentions into action. Stop calling or texting your friend, don't engage in conversation, and try to avoid the individual as best you can going forward.  You may want to block the person's phone number so that individual can't call or text you. However, if you're hopeful that your friend can change and that you may be able to mend things in the future, you should avoid blocking that person's number. Consider un-friending/unfollowing the individual on social media. It may be difficult, but it will make it easier for you to move on. Don't drag your mutual friends into your problems. Respect the fact that people may still wish to remain friends with the individual, and avoid speaking negatively about that individual to others. Ask mutual friends if the condescending individual will be at social events, and decide whether or not you want to try attending those events.