My girlfriend sent a message saying that obsession is long but short but fickle. What does it mean?

It means that obsession is not easy to let go, but changes can happen in a short time. Obsession means that as long as you persevere, you can do something. Change means that you have no perseverance and no perseverance to do one thing. Repeatedly changing the decisions you made before, combined together, it will last forever. But the belief that you can do it as long as you persevere is short-lived, but it will not be the same as without perseverance. When people make decisions, change comes quickly. If you have perseverance, you can do well and it will be more permanent than ever. If you change your mind repeatedly, the things you get will leave you faster. I hope it helps you, please adopt it