But think about this example

"I got all excited" and "I got excited". Do they differ structurally? They differ by the degree of the excitement. Basically they are the same.

So if "I get worked up" means being emotionally involved in high degree of expectation "I get all worked up" means the same but with stronger feeling.

到目前為止， 我認為這行詞表達了這樣的意思， 即我曾熱切盼望， 但到頭來隻是懊惱。 But I leave it open. I am going to spend more time on this.