Actually, looking at the English again has "enabled me to realize" that there is a mistake! You should use "that" as the restrictive pronoun instead of "which". On a side note, you could shorten the English by 25%: "Discuss a situation that made you realize a certain strength or weakness." Comments: 1) "talk about" is very informal. "discuss" would be preferred in writing and is fine for most conversations too. 2) "made you" and "enabled you to" have slightly different meanings, but either is probably acceptable to you. Also, "caused you to" would be equivalent to "made you" and would be more formal, but wordier. 3) The shorter "to realize a certain strength or weakness" above could potentially mean either definition of realize: 1. to become aware of or 2. to cause to happen, however, native speakers will correctly assume the first, most common definition.

The English in the question is fine. Are you looking for someone to write an essay for you?