Best advice: Don't give a fu*k.
Current gen SSDs have very good durability. The controller would fail(7-8 years) much before you exhaust NAND writes.
This is as long as you don't abuse your SSD by writing and deleting ~1TB of data every day. In this case, the SSD will probably last for 1.5 years.
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Don't defrag the drive. Ever. That's one tip from me.
If you're on Win 8(idk about 7), the OS will recognize the SSD as a SSD and won;t defrag it ever. It'll just TRIM it.