Originally Posted by Offroad
Like my sister and brother, I should ...
You don't want to be treated "similarly to" them - you want to be treated exactly the same as them. Note that you don't need to repeat "my" in the first part.
I might actually reverse and slightly change the sentence in this case: "I should be given money for all I have done for this family, like my brother and sister have been".
Remember - correct capitalisation, punctuation and spacing make posts much easier to read.