Is becoming old when stuttering will be far less significant to you than it is now. However, you might look back on your life and have some regret about all the things you wanted to do but didn’t because of stuttering. You could have made changes in your life but you didn’t.
Better still is to work on reducing the significance of stuttering now, and really do some of the things in life that you want to.
Not tomorrow. Not next week. But now.