Vigor should not be your only healing, if you use 2h then use rally, if you use dual wield use rend, bloodthirst, etc, ....
There are two main routes I go:
DW
FRONT BAR - DW
Blood Craze - DoT and Heal
Bloodthirst - Heal as you dps
Steel Tornado - AoE dps
Killer's Blade - Good for quick heals on targets that are almost dead
Reaper's Mark - Throw on a low health target and let him die for major heal
BACK BAR - Bow (AoE and Buff Bar)
Caltrops
Endless Hail
Leeching Strikes - Keeps your resources and health up
Vigor - I feel it's a nice emergency heal if you get too low, too fast
Whatever else you want
There are multiple sets you can use to keep up resources and/or help you heal. I do find it much more difficult to sustain on my Stamblade vs certain other classes.