Feeling Alone Despite Having a Family

You should try to understand why you feel this way, Is it because you lack communication with your wife? Is it because you feel like she is judging you for things you do? Is it even from the people surrounding you? All of these things will help you understand why you feel the way you do and maybe you will find a way to change it. What helped me a lot to understand these things about myself was my psychologist, have you ever gone to therapy? If not I suggest you do, it can help a lot.