A goal is something in the future. I want to get there. A habit can be established in a single instant. Just by sitting down at the piano, I am a pianist. Voilà! The same goes for running, meditating, or any of my other habits. If you get out of the habit, you can just re-establish it again.
I was having a hard time with goals. Should my goal be to run in 5k in under a certain time? If my goal is just to run, then I don't have to worry about the goal at all. The time might get better, but if it doesn't, it is not the end of the world. I could see my piano goal as to learn a certain piece, but I have already learned pieces and will continue to learn others, so I have already achieved this. Since my playing it improving just because I have the habit of playing, I don't have to even set a goal. I can enjoy the improvement as it happens, but also enjoy playing at my current level, whatever that is.
So set the goal of having a healthy, relaxed relationship to what you already doing. It is better to have the habit of drinking water every day setting a long term goal of drinking 10,000 gallons of water.