I fell in the same situation leading indoors at the chains. I shouted falling and my buddy thought i wanted slack. I fell to the ground, on my feet, about 9-10m. I gave him a mean look and we went over belaying techniques (we were both early leaders), I never really thought about it outside of 'how can we learn from this and not do it again'

I find that after not sport leading for a while i'm always just a little scared to fall and push myself. after a few falls i just stop thinking about falling and as a result fall less.

i didn't lead but a few routed this summer and then went to the red and the first day, scared as a ninny all day... overly tense. my buddy pressured me onto 'super best friends', very overhanging, all perma drawed, says everyone falls mantling the lip. ok so i get up there after hanging twice and pull the lip get to the next draw... took a good whipper into thin air :)

focus on good safety technique (watch the rope behind your ankle!)... maintain, inspect, and trust your gear and remember falling on sport is okay!

i prescribe some easy overhung sport leading, a couple practice falls and a couple unexpected ones :)