door doesn't shut

[quattrorunner]

My doors are getting old. Both take more effort to fully shut these days. I don't like having to slam the door to shut it. What parts/adjustments do I need to do? I'm not as good at this kind of thing. I can yank the engine and swap the clutch in 4 hours but not this I guess.
Help please? Would the striker plates fix this?

[handleyb]

The doors probably sagged a little over time. You should be able to make the adjustments at the stricker plate. the door hinges are trickier to deal with.

[E Sully]

Mine was solved by replacing the door striker plates. The plastic cracking and falling out caused the issue.

[quattrorunner]

Doors don't show signs of sagging, like ramping up to close. Sounds like just the striker plates. Thanks guys for the input.