SSDs have limited lifespans due to their write limits. However, some operating systems are better adjusted for SSDs than others, and some tweaks can help. Here are two sites that offer some advice:
Tweakhound advises users not to adjust any settings under Windows 8, as the OS is optimized for SSDs. However, users may need to run the Windows System Assessment Tool to force the OS to recognize the SSD.
For users under Windows 7, it may help to extend the life of the drive by disabling SuperFetch and PreFetch. These may be unnecessary, but definitely disable defragmentation and enable TRIM.
Some more tips can be found at Speedguide.