Help me! I suck
signets give 5 might and are on lower cooldowns.
Are you a condition build or burst build? D/P is usually a burst build the doesn’t use a lot of conditions, while P/D is usually a bleed spam build with maybe 1 venom and caltrops that is very “tanky”.
Honestly you sound by the build you want to go more burst, there is a build that uses 3 signets to stack 15 might (with II in critical strikes) that will do some massive back stabs. One thing you should really do is make your build on http://en.gw2skills.net/editor/ so we can see the traits you’re using and other things and make recommendations.
Here is what i think the signet build is:
Thief 3 Signet build
There is a down side to this style of build you can’t take many hits so you have to dodge and use stealth exceedingly well.
Now there is a P/D condition build that works well too and here it is:
P/D Thief tanky condition build
These are just some samples of things to try, please experiment with builds to find what you like.