I never view it as a binary situation. I personally see myself moving along the scale between the two based on situation and my mood. I view myself as mostly introverted but occasionally surprise not only myself but also wife with my extroversion when the conditions are right.

Perhaps the original poster just found the right conditions for their extroversion to blossom.

It's all mindset...I leaned introvert in high school and was locked inside for 1-2 years coding after college, went hard INTJ. 18 months later, after a lot of small changes (moved, added a friend group, got an apartment in the hip part of town, pitched investors, more employees), I was a hard ESFP

It really makes me hurt to be stuck by myself for this long again. There's some net benefits to introversion (more time, mostly), but theyre minimal and don't increase much

Myers-Briggs is a state measurement, not a trait measurement.

Filed under yet another reason why Myers-Briggs sucks.

For me it was mostly a matter of managing my anxiety, once I had a better handle on it I had way more bandwidth for being social and was able to enjoy it and be energized by it.

As others said, I don't think of it being introvert/extrovert as black-and-white. I think the most effective ways to add qualities of an extrovert were:

1. Ask yourself why do you have to be an extrovert. Several advantages come to mind: More connections, more confidence, better relationships, no stage fear, better small-talk, better dating life etc.

2. Understanding why you don't like being social/going outside. Write about it. Start from the first moment. Is it because of your parents? Did your siblings make fun of you for expressing your emotions/feelings? Is it your classmates in kindergarten/primary/secondary.. etc.

3. Now that you understand the cause, have hobbies that make you an extrovert. Covid examples: Online group lessons, hiking, walking in the park. Post/Pre-covid examples: Social dancing lessons, Meetup.com (weird crowd sometimes but hang in there), group lesson in any topic you're interested in, toastmasters, team sports. Think of something you always wanted to do.

I think another option would be to accept being an introvert and not see it as bad thing that has to be changed.

I don't think it's a bad thing. Although, being an extrovert gives you some privileges you don't normally have when you're an introvert. Same thing applies if you're exclusively extroverted

From my experience introversion is relative to your environment, so if you move or get some new friends maybe that might help.

You can change almost anything about your personality.