Language is not a static thing it grows and changes, altho' I have not heard many people say this in real life. It used to be said that Soaps imitated and reflected real life but now I think it is often life that imitates soaps. You never used to hear people talking about supporting others, they used to help each other, the first time I heard this was when I was working in Social Services, then Eastenders started using it and now it is quite common in real life. I suspect that some TV writers have a background in pyschology and counselling and it crept in that way.