The Unwritten Rules of EVE:
1) Never undock a ship that you can't afford to lose (fittings and cargo, included)
2) No space is safe space
3) ALWAYS get FULL insurance on any ship you fly.
4) Never haul more than 20 million worth of goods into Jita in a T1 hauler
5) Always keep local open in low sec space
6) Always check the map for activity when traveling through low sec
7) Always use warp-to-0km when traveling in low sec, especially in 0.0
8) Never go AFK in a low sec system while undocked
9) Never mine solo in a barge/exhumer in low sec
10) Always make safespots in low sec systems that you visit frequently

Alternatively:
1) Trust the fear
2) Stay at range
3) Expect