Well you can get a replacement glass. Maybe a couple. Some juices are known tank crackers (like cinnamon, and some others) if it's not a glass tank (sorry I don't own the mod). If it is a glass tank, yes, care when tightening it and handling it may help.
You may want to look into a backup vape, to prevent these things from happening. Do you have a replacement glass with your tank, many of them will provide another tank, and you can simply replace it.
I'm hard on tank glass, I actually prefer pyrex tanks and etc. They last longer (but I don't use tank cracking juices.
A replacement mod is a good idea if you are serious about vaping. For one it can be nice to rotate tanks for flavor or if chain vaping and that way if one of your mods is down due to stuff like this, you can continue to vape while you work on a solution.
Best of luck,
Anna