You can look for a part of the word that is added to that word, to the root of the word. For example, 'happy' is the base of the word, or the root. When you say 'happily', you see that -ly has been added to the core word, and that is the suffix.
Answer:
If someone doesn't appreciate you even if you're trying your best, you should not let that demotivate or stop you.
Explanation:
It doesn't relate to "me" in any way though.
