Photography website Photodoto has posted an article which shows how a few small adjustments can make a photo really stand out. It also shows that you have to start with a photo that’s already pretty close to your final vision. You’re probably not going to succeed if you have to make numerous, huge adjustments in an attempt to “salvage” a photo. As the saying goes: garbage in, garbage out.
"I really enjoy the process of editing a photo. Each one is different. And it can be a lot of fun playing with ideas, colors, highlighting this area, downplaying another. A single photo really does have a lot of possibilities depending on what you do with it. But I’ll often make a photograph knowing in advance the edits I’ll need to make to “develop” it."
Read Anatomy of a photo edit: Ready in 3 minutes