Ask yourself some questions
- Am I a winning player at the limit I'm currently playing?
- Am I sufficiently bankrolled to move up?
- Bankroll considerations aside, would I be comfortable moving up?
- Would I be better off just sticking at my current level and adding more tables (seriously, if you're playing only one table, learn to multitable well at <$5s, then move up).
If you're multitabling already, drop half your tables or so for a while when moving up to make the adjustment a little easier.