I have four Lace Monitors and they are all extremely placid calm and easy to handle - I found the best way is lot's of hides change the water bowl every time the little guy is out this shows that you are not going in to the cage for the animal - never as in ever pull it from a safety hide this makes it feel unsecure. Easiest way to build trust is with food let it see you put food in to the enclosure and when it gets a bit more comfortable start eating food near its enclosure bbq chicken's are good cause of the smell have the door open and offer a bit of chicken they eventually will come to you for it. obviously main source of food is rodents. If you can position the enclosure where it can see people quiet frequently that is good a bit higher so as if it's looking down at you.