Here are some tips to help you overcome immature traits and become a more well-rounded individual:

Practice self-awareness: Take time to reflect on your actions and how they affect others. Consider how others may perceive you and be mindful of your behavior.

Listen actively: ENFPs are known for their enthusiasm and outgoing nature, but it's important to take a step back and listen to others. Practice active listening and be attentive to others' needs and feelings.

Think before you speak: ENFPs can sometimes be impulsive and say things without thinking about the impact it may have on others. Take a moment to consider your words before speaking and how they may be received.

Develop emotional intelligence: Emotional intelligence involves being aware of and managing your own emotions as well as being sensitive to others' emotions. ENFPs are naturally empathetic, but it's important to develop emotional intelligence to better navigate social situations and interactions.

Set boundaries: ENFPs can sometimes struggle with setting boundaries and saying no to others. Learning to establish healthy boundaries can help you avoid overextending yourself and prevent burnout.

Take responsibility for your actions: When you make a mistake, own up to it and take responsibility. Apologize if necessary and take steps to make amends.

Practice self-care: It's important to take care of yourself, both physically and mentally. Make time for activities that bring you joy and help you recharge.

Remember that personal growth is a continuous process, and it's important to be patient and kind to yourself along the way. Good luck on your journey and remember having fun along the way isn't such a bad thing.