How do I recognize the attachment to certain things?

How do I know whether I am attached to certain things or not? Examples: 1. When we are attached to a taste, we will try to find more & more tasty foods. We can reduce that by getting a simple meal, cutting the extra meals or only taking 2 meals per day like monks. 2. When we are attached to clothes, we are trying to buy the latest/expensive clothes. We can reduce that desire by wearing simple and charming clothes. The questions are, **How do I know** whether I am attached to my career, exam results or not? (Now I am in university. I have to work for exams. Sometimes I feel, I am attached to exam results) If I am, how do I **work without attaching** to it? I read this answer already: [Should I do what I don't want to do?](https://buddhism.stackexchange.com/q/25669/17744)