Question every word.

“The more I contribute, the more I am accepted and valued by the group as a whole.”
‘Group’ and ‘as a whole’ are redundant.
Think about it; what’s the difference between ‘group’ and ‘as a whole’ in this context?
‘Very little’ in my mind.

‘Group’ implies the entire unit of people represented. And ‘as a whole’? It also implies a collective, but because there’s little difference in meaning between ‘group’ and ‘as a whole’, why mention both?

It’s a subtle redundancy, but one worth striking out. Every word must pull its weight; don’t allow any excess language. The resulting sentence is tighter; enhancing the flow of the rest of the piece.

“The more I contribute, the more I am accepted and valued by the group.”

Yes, it’s a minor alteration, but the sum of this editing over the entire piece of writing will add up to a stronger, smoother read for your audience.