Bismihi ta'ala

Although reciting a dua and praying for your husband would be a good thing to do, but it on its own will not eliminate the problem of alcoholism, him creating problems with those around him or his immaturity. 

You will need to seek intervention, by requesting his elders and even a therapist to instruct him on how to stop stop drinking and to improve his conduct. Such an individual should not be left to behave in this way, as it will certainly affect your marriage, and also your children as well, if you have children. 

His insecurities might be because he was spoiled from his childhood, or sees others as a threat to him, or whatever reason it may be. You must try to reassure him of his good qualities, and support him in what's challenging him, but you cannot do this all on your own. Speak to elders in the family, a professional counselor, and whoever else that can assist your husband in what he is going through.

With prayers for your success.