When you are so immersed in a task, your mind would be so focused that you will only get enthusiasm and not anxiety! The question is itself wrong. When you have interest in the work at hand, you will not feel the pressure. You will not know what you are doing. You must get totally involved in any work that you do. Then, you will not encounter stumbling blocks like pressure, haste and tiredness. Hence, know that you will feel anxiety only when you are not interested in the work. When you have interest in the work, you will not even desire rest! (M, p. 210)