"Understanding who you are is the first step!"

Now I understand that everyone has a little insecurity when it comes to their talents and creative gifts (especially when they compare it to the competition out there in the professional game dev arena). But before you let that spiral you into a deep well of self doubt, understand that you are an individual. There is no one else on this planet like you! Appreciate the fact that while you can always gain more experience, techniques and competencies NO one can be, think or create like you! This is what makes creativity, innovation and style so rich and exciting! It's from this wonderful uniqueness that power and influence comes from an individual (or a collective of individuals pooling their "individual" gift together).
So before you let intimidation and insecurity overwhelm your confidence and your "strike ahead" resolve, appreciate who you are, what you have internally waiting to be expressed externally to many who wish to see your creative uniqueness and individuality.