It's going to happen. It's going to happen and it's going to keep happening. Inevitably it will rise up and slam you straight in the face without warning. One day all will be good and the next day you will crumple into a whimpering, drooling heap in the corner. Despite your best intentions, one day, if it hasn't happened already, you are going to wake up and discover yourself making every excuse possible not to train. You will turn on yourself. It may be happening to you right now.
You will think about the road ahead, your life, and panic will set in. The thoughts of everything you have to do: the work, the training, the nutrition, the learning, trying to fit sleep in there somewhere. Boxing is probably not the only thing in your life. You have relationships, classes, school, interests and hobbies. Your kids are being neglected. Your wife or girlfriend complains you are putting them second.