Most of the rejections you receive will be form letters. It is important to remember that just because a rejection is a “form” it doesn't mean your story is bad. Nor does it mean the editor is a heartless meanie who can't be bothered to send you a personal note. Form rejections are a necessary part of the business.
Sometimes you'll be fortunate enough to get a personal rejection. These usually offer specific reasons on why a story wasn't accepted and, on occasion, may offer advice about how to improve the story. But, although personal rejections may be more encouraging than form rejections, in the end they both mean no.
The worst thing you can do is let rejections of any kind discourage you from continuing to seek publication.
So, what have you submitted today?