Leveling up too fast
The best way to not level up as fast is to not play as much.
Forum Discussion
This was happening to me when I was at lower levels. It is usually a result of doing 60 minute tasks and visiting a lot of friends. You eventually catch up but I understand it is a bit frustrating when your playing level doesn't match your game level. Also if you are concentrating on decorating this will make you progress faster for your level due to the xp of decorations.
