That project that you’re tinkering away at in your free time? The one that’s fun? That maybe you only get a few minutes to work on everyday, but that you still get a little of work on?
Keep it that way.
Don’t force it. Don’t make it your “main” project. Don’t block out hours of your day to work on it. Don’t rush it.
That’s how you kill it.
Keep it light. Keep it fun. Take your time with it.
It won’t get lost.