You may not have to do it, but be willing to. Your willingness will be tested. When a portion of the comfort zone is being expanded, it always seems as though expansion of any other part would be more tolerable, more acceptable. We want to put it off, postpone, and do it later, so some other part of the comfort zone can be challenged. In fact, when that other part is challenged, it will seem as though this is the worst part of the comfort zone to expand, and any other area would be better than this.
Discomfort always seems more tolerable anywhere other than the place in which it's being felt.
Plan to be uncomfortable. Understand that it's a necessary part of success. Learn to be comfortable with discomfort. Have compassion for the part of you that's growing. The first step is a willingness to be uncomfortable.