To me, moving-up should be about comfortability and confidence. Confidence that your strategy is working and confidence you can manage to take win/loss variation at the next level. E.g. losing $100 on a 1/2 limit table could mean $400 on a 2/4 limit table. While other folks might feel uncomfortable betting $8 on a hand vs. $1,

When I first started I thought throwing down $5SnG and 10$ buy-ins for ring games was stressfull.... who would of thought I would be playing in $30 SnGs and $100 buy-ins... The nice thing about "graduating" to a higher-table is the potential profit you can gain. Just 6-months ago, I thought $10/day was a good day. Now I can bring-in 10-20x that amount with very little risk to the bank account.