I love plants, but I don't have enough room in my place to have more than I already do. So how do I have more plants, when I literally can't? Watercoloring! This allows me to have as much as I want without running out of room. This might sound odd to some people, but think of it from the view of perspective. You can be sad about not having something, or you can figure out how to get that even if it may not be literal.
You can let negative thoughts run through you mind and fester there, or you can choose to somehow find a way to banish those thoughts and get that which you desire.