Ok, so I typically fit both of those adjectives. However, I am referring specifically to those folks that seem to enjoy bringing others down when they are trying to make positive changes.
How many times has a friend or family member essentially put down a positive change you were trying to make? I know it has happened to me and unfortunately I have no doubt done it to others.
We fear being lesser than, being left behind, and frankly it is hard to keep up our excuses when others are doing the thing we have failed at or given up on.
If you find yourself being a downer or doubter, think about why you are doing that. Do you want to make a change too? If so, go for it.
If someone is pooh poohing a positive change you are making keep in mind the reasons above. That is likely why they are doing it and don't let it get you down!