It's not easy to be accountable to no one. We are social creatures, and are hardwired to seek the approval of others. However, there are a few things you can do.
First, you must be clear about your values and what is important to you. Once you know what you stand for, it will be easier to make decisions that align with your values.
You must be confident in your own abilities. If you believe in yourself, you will be less likely to seek the approval of others.
You need to be comfortable with being alone. If you are used to being around people, it can be difficult to be alone. However, spending time alone can help you to learn more about yourself and to become more independent.
You need to be honest with yourself. If you are honest with yourself about your strengths and weaknesses, you will be less likely to make excuses or to blame others for your mistakes.
Being accountable to no one is not easy, but it is possible.