If you mean make an internal shift with fish, I did it. When I started(1990) I quickly got into Cichlids, loved dumping feeders in and watching them chase them and eat them. Then I outgrew that to where I would dump them in and walk away. Then got tired of them all together and started going with peaceful fish. By 1995 and 26 tanks later I felt the burn out and decided to cut back. In 2 years I was down to 17. By 2000 I think I was down to 3-5 tanks. In 2003 my 190 broke a seal, so I lost my biggest. I was down to an 80 gallon (in my bedroom) and a 125 in another room.
When my wife came into the scene she made me take down the 80, which at the time I only had like 5 fish. Later she let me start a 20 gallon(for her(she hates big tanks)). In 2008 when we moved she would not let me bring the 125 in the new house(no room). I traded it for a 55 with someone. Later another friend gave me a 75 which took the place of the 55.
Outside she was/is ok with me to have a pond, but being out of work, I'm not going to spend money on one.