Same here it was OK when it was very long, very thick, people use to come up and touch it and say was it real
, now I have cut it really short in a boyish cut with a fringe, I have to be careful to keep it trimmed ( I do it myself) or else it tends to grow out sideways and look like a triangle.
I use Pantene clarifying shampoo to avoid build up and a light conditioner so as not to weight it down.
John Freida make a good luxurious thickening blow dry lotion, or alternatively luxurious thickening mousse.
Try to make sure you eat plenty of protein and take good multi vitamin and mineral supplement aimed at skin and hair, also an egg a day.
http://www.top10homeremedies.com/superfoods/10-superfoods-to-prevent-hair-loss.html When I was younger I use to have brewers yeast powder mixed with pineapple juice every day, it did wonders for skin hair and nails.
Hope this helps.