Love, it has been said, flows downward. The love of parents for their children has always been far more powerful than that of children for their parents; and who among the sons of men ever loved God with a thousandth part of the love which God has manifested to us?
If you always put limit on everything you do, physical or anything else. It will spread into your work and into your life. There are no limits. There are only plateaus, and you must not stay there, you must go beyond them.
Rock became an incredible commercial success, people just became bored with serious music, and it was forgotten.