(Pro 23:12 KJV) Apply thine heart unto instruction, and thine ears to the words of knowledge.
The Bible assumes that learning will not be fun. I know that is the common mantra of education today, “Make learning fun.” It may be possible in a cooking class or PE but not so much in Constitutional law or The Theology of Romans 101. We see that in the use of the word translated “discipline” (4148) in the NASB and “instruction” in the KJV. To us and our modern Montessori approach to education we don’t see them going together. The Bible knows the hearts of mankind and knows real knowledge is an uphill climb.
As adults who are filled with the Holy Spirit, we can often discipline ourselves. That is good. If we get lazy then it is time for some applied chastisement, which is at the root of discipline.
So? Push yourself. Reorganize your day. Search your heart and see if repentance is part of the order of the day.