Probably the best advice is to avoid dust in the mirrorbox & sensor which could get into the shutter mechanism and create friction and abrasion. Likewise, salty sea air could induce corrosion.
Of course that means: don't change lenses, don't zoom a lot, don't go outside, don't go to the sea shore. Just fire the camera inside a hermetically sealed clean-room. Where's the fun in that!??!!?!?
Personally, I like taking pictures outside, using different lenses, going to sea, etc. And, although I try to be careful and specifically bought Pentax for it's ruggedness, I know that I'm taking more risks with my camera than someone who keeps their camera coddled in a bag or in a studio. It's a price I'm willing to pay for images that aren't found indoors in clean environments.
P.S. I've sometimes wondered if gel-sticks would be better than rocket blowers for sensor cleaning in that gel-sticks remove dust whereas rocket blowers blast dust into other parts of the shutter, mirrorbox, and focus screen areas.
PPS: Sorry about the mention of digital camera stuff in the film camera section!