It means 'to look at things from a different angle/change the way of seeing things".

I think the idiom: "put [x] into perspective," is what you're referring to. So when you say, "Talking to other people helped me put things into perspective," you're saying that you found a more accurate way of looking at yourself and your situation. Basically, let's say your parents bought you a new car in the color pink and it's really, really bothering you. If you talk to some other people, you might realize that not everyone can even afford a car to begin with. Then if you look back at your own situation, you could say, "talking to other people helped me put things into perspective," because getting a car from your parents for free in the first place is a luxury that not everyone can afford. So it's silly to get so upset about a car color when you received a free car to begin with. Hope that helps.

Literally, "perspective" means the artist's technique of drawing distant objects smaller than nearby objects. If you draw people who are far away the same size as people who are nearby, the drawing is "out of perspective." Drawing the farther things smaller is "putting them into perspective." Figuratively "to put something into perspective" means to use good judgement about the relative importance of things. Something that is not really important may seem important because you are "too close to it." If you think about your life as a whole, you can "put things into perspective" and not get too upset over things that are not really very important.