My thoughts are with you and your family...life will never be the same, it should never be the same as you've lost the physical presence of someone who is a part of you.
The hole will never heal over, it may shrink a little, but you'll never be complete again. This is normal and rightly so.
Keep talking, keep celebrating his life and his memory will never leave you.
Let grief flow its natural course, this could be years or a lifetime, don't fight it buddy...if tears come, let them flow.
Although I don't know you if you feel like a strangers ear can be of use drop me a pm