Anxiety is tension. You fear something will occur, and yet you wish to bring it about.
Fear is the greatest obstacle to understanding and improvement. Fear keeps you in the light, but you already understand what is in the light, which is why it is light in the first place. Stare into the darkness if you wish to learn something new.
Do not be afraid of fear. Ready for a twist? Fear and excitement are one and the same. You feel most alive when you are closest to death. The fear-excitement spectrum varies according to the sense of control over the situation felt by the individual, which comes from certainty, which comes from experience. More perceived control, and excitement results. Less, and it begins to slip into terror. But the two are one and the same. Have fun out there.