Knowing your values is important so that you can live your life in line with what you believe in. your values are like a compass guiding your decisions. Many of us let life happen to us as opposed to taking action.
One of the reasons people struggle to meet their goals or find they know what to do but aren't taking the action required is because their goals have not been set in line with their values.
Once you have figured out what your values are and set your goals to align with these life becomes far more purposeful and fulfilling.
This is the key to living a life you love.