Imho, no one can know how they will respond until it actually happens.
No. A person who has not experienced the bad guy(s) coming after him/her, must consider such and understand completely that it is life or death. LIFE OR DEATH. If someone breaks into your house, that person will kill you and you have to kill first, don't hesitate. Say that over and over until you know for damn sure, you have to kill that person(s). You don't want to have that conversation with yourself with the bad guy(s) already there.
Have several ways to kill. That means have a loaded weapon easy to get to. Consider where a person is likely to get in, and be ready to get to that place with a loaded weapon already with you. Forget having a gun locked in a gun cabinet and the cartridges up in the attic. You have no weapon if you do that except for using your gun as a club - in other words, you are dead.
Place heavy duty mace guns where you can reach them and one place is close to the front door. The mace guns I have shoot a far distance and have a red laser to direct the spray. The spray in these guns stick wherever they hit. These guns are not your first line of defense, a regular loaded gun is, but have them for backup.
Get self defense bats and put one near each outside door. These bats are sold on Amazon, mine are called Brooklyn Smasher. They are made by Cold Steel. They are long and heavily weighted. If you hit a head with this bat, the skull will be crushed for sure. These are not for playing ball and keep them away from children - do not let them play with these defense bats as they are dangerous.
Place sharp long knives where you can reach them in a hurry. The longer the better - you don't want the bad guy to get to your body - keep him as far away as you can. Don't attack a person with the knife up in the air to slash downward - that is easily deflected by the bad guy. Swing the knife from below and into the body.
There are other ways to defend yourself up close and personal, but don't let it get to that.
Mentally practice over and over and over. If “x” happened, you would do a, b, c, d. But if “xx” happened, you would do a, b, c, d. Keep thinking of situations and go over and over what you would do. You can physically go through your house and imagine this and that happening at different places in your house, and what you would do. Practice, practice, practice.
Your mind needs to know what to do so you can act quickly. Make it a reflex action so you don't have to think through it when it is necessary to act fast, you just do it.