There could be several reasons why some of your old friends start to avoid and ignore you after you declared that you are taking full responsibility for your own life. While I can't know the specific details of your situation, here are some possible explanations:
Change in priorities and interests: When people take responsibility for their lives, they often go through personal growth and transformation. This might lead to changes in their values, goals, and interests. If your old friends don't align with these changes, they may feel disconnected and choose to distance themselves.
Envy or jealousy: Some individuals might feel envious or jealous of your decision to take charge of your life. They may be struggling with their own issues or feel inadequate compared to your progress. As a result, they may avoid you to avoid facing these feelings.
Fear of judgment or criticism: Your newfound responsibility might highlight some areas in their lives where they feel less in control or less successful. To avoid judgment or criticism, they may choose to distance themselves.
Misunderstandings or miscommunication: It's possible that your declaration might have been perceived differently than you intended. People might misunderstand your intentions or feel hurt by the way you communicated your decision, leading them to avoid you.
Incompatibility: As people grow and change, their social circles may naturally evolve. Your new path in life might lead you to seek different types of friendships, while your old friends might prefer to maintain their existing lifestyle and relationships.
Feeling left out: If you are making significant life changes and not involving them in your journey, they may feel left out or excluded from your life, which could lead to avoidance.
Toxic friendships: Sometimes, when individuals embark on a journey of personal growth, they begin to recognize toxic relationships in their lives. If some of your old friends were negative influences or unsupportive, your decision to take responsibility may prompt them to withdraw.
Temporary phase: It's possible that this is a temporary phase, and some of your old friends might need time to adjust to your changes. In such cases, they might reconnect later on.
It's essential to remember that while change can be difficult, it also brings new opportunities for personal growth and forming meaningful connections with like-minded individuals. As you embrace your new path, you may find new friends who share your values and goals, leading to more fulfilling relationships. Focus on surrounding yourself with supportive and understanding individuals who encourage your growth and well-being.