How symmetrical is your part? If you knew, then you could work on the smallest segment and mirror the body after you've made your changes for easy part modifications. Or for Simulation, you could work with that segment alone to speed up an analysis.
Let SOLIDWORKS find out for you.
If you have SOLIDWORKS Professional or Premium, go to the command search at the top right of the window and type 'Symmetry Check' (will filter as you type).
Then just choose the button below - this is your one click!
Solid Solutions Management