Don't worry about how many sweeps other people enter.  When you work you only have a limited time you can devote to sweeping.  Yes, entering more sweeps means you 'probably' will win more but does not guarantee it so don't let yourself obsess over the number of sweeps you enter.  Choose the sweeps that offer more than one prize, one entry sweeps and sweeps for things you really want or can use.  You can only do what you have time for so be sure you are using the tools that SA offers and a form filler so you can enter more sweeps in less time.  Good luck!

I think the usual sweeping curve goes something like this:

Oh boy, LOOK at all these!!! I MUST enter ALL of them and then I WILL win.

For some, it only takes a week for them to get frustrated and start asking "Why can't I win??? I see all these others doing it, what am I doing wrong???" while others plod along and don't reach that point for months.

Since 6 months is the norm, those posting they won after a few days/weeks are actually outliers, who are also more likely to post, but that doesn't change how others react.

The other part of the curve is in how many & how often you enter.

When you start out, ANY win sounds fun, and so we tend to go hog wild - yes, I did it too. 

In time, we learn to prioritize, and that while entering lots of sweeps may increase your chances, it doesn't guarantee them.

Have you read:

NOT WINNING ANYTHING? Tips on WHY:
http://www.sweepstakesplus.com/smf/not-winning-anything-tips-on-why-t63762.0.html