Best bet is to wait. All a trigger job does is save time. There's parts to polish and that will make things a little easier but with a weapon like the XD I find it a little better to just keep shooting it and practice with it when you're not. Some snap caps and time will do a lot more good than anything. find a fixed point on a wall or something and practice working the trigger with a snap cap in there. The XD trigger is not bad at all for the type of weapon it is. It just takes a little getting used to.
Nothing can replace practice time.