ANSWER:

If you have children in the house, you can address them and teach them about the importance of prayer and the great reward of perfecting it while he is listening and this would be indirect advice. 

I feel very depressed as my husband is not regular with his prayers. Even if he prays, I’m not sure if it’s accepted because he is just too quick with it. How do I explain him about the importance of salah as he is short tempered? Sometimes he even misses Friday prayers.