A way to liven up a piece of writing is to choose action words - verbs - with great care. Use words to show the reader the actions or behaviour of a character. For example:
He walked into the room and said, 鈥淭his is what I was waiting for.鈥
By choosing more precise verbs, you can give 鈥榙epth鈥 to your writing. This gives the reader a more vivid impression of your scene and characters.
Notice how each of the following sentences changes your perception of the character:
He strolled into the room and muttered, 鈥淭his is what I was waiting for.鈥
He marched into the room and barked, 鈥淭his is what I was waiting for.鈥
He shuffled into the room and sobbed, 鈥淭his is what I was waiting for.鈥
Think about the impression and the atmosphere you鈥檙e aiming to create as you make your vocabulary choices.