Why is it important to identify core values and align with them? So that you can acknowledge and accept who you are, what you want and be able to serve the world.
How do you identify core values? By noticing what you are passionate about, how you do things and also by how you spend your time.
It is important to spend your time doing the things that are important to you and to be congruent in your thoughts and actions. Core values tend to be things like being honest, persistent, empathetic, industrious and creative etc.
If your core values are not serving you and you would like to improve your life, you may need to consider changing your core values.