Behaviour is the result of all kinds of things including culture, gender, education, circumstance.
But at the most basic level behaviour is the result of:
1. Needs – and attempt to get needs met
2. Beliefs and values – the need is met via these systems
3 Thoughts and feelings – needs are met via those systems using these tools.
You can only change your thoughts and feelings by shifting the continents or the other two (needs (fixed) or beliefs/values).
Actually my guess is you can only change your “feelings” by shifting your beliefs and values. Thoughts can change rapidly but that’s only have the story.