Focus on niche products because there will be less competition in that area.
For instance its not always good to jump right in and sell ipods because there are plenty of other sellers buying these items generally in bulk and getting a very good deal if you were to try and sell one from a dropshipper.
There are plenty of niche product areas you can go into.
For example, what about baby strollers? May not seem like a fun thing to sell, but some types are in demand and less competition selling them, so more profit margin.