Future projects, changing up stock and tank layouts, new purchases, learning something new. Sometimes life just gets too busy and the hobby becomes more of a burden that a joy, but during those times you have to press on and do what has to be done as, at the end of the day, the fish are pets and rely solely on you for care. When I find I am having a dip in interest in the hobby and cant change things up for what ever reason I research subjects I only have basic knowledge of and watch a couple docos and it normally picks me up.