So Im runnning crit mass build and i constantly buttton mash 1,2 and 3. Is there a program or any way i can make it so that i can hold them and they will just work? anything to make it easier on the wrist and fingers?

If you hold the buttons, it will recast right as its ready; however, I wouldn't recommend doing that since I find that timing can be really important when fighting some monsters. For instance, with Siegebreaker, I usually try to switch between Frost Nova and Diamond Skin to ensure that I'll never be taking damage. If you use a Frost Nova and Diamond at the same time, it's pretty pointless and will most likely cause you to die when CM isn't proc'ing and you're waiting on cool downs.

Also, when it comes to third party programs that would produce similar effects, it just sounds like bad news and you probably shouldn't get involved with that as it may result in a ban.

The CM/WW build is definitely tiresome but it's also one of the easier builds that will take down pretty tough elites/champs--no pain, no gain I guess. I'd recommend to switch between different farming spots if you find that your wrist begins to hurt and try farming A2 for a bit.

Thank you very much for the advice. Will try act 2 for a while

Autohotkey. From experience, it makes a big difference, and I haven't heard of a single person banned because of it.

Personally, I use a Razr Black Widow. Technology and the advancement of human augmentation should never be shunned.