Sadhguru
How can I stop reacting with dislike to a person I can't stand?
Respond, don't react
If you can't stand someone, you avoid them, which is an attempt to avoid nasty impressions. But your experience becomes beautiful or nasty depending on how you react. The most fundamental training is to learn to respond, not react.
Because your experience becomes beautiful or nasty depending upon how you react to it. So the first and most fundamental training you need is to learn to respond, not react.