msida, you are asking exactly the same question that I asked after my husband died. There was no-one to ask, I got on a local (country) bus and sat behind two older women who looked as though they had been widowed. I asked them and they were so kind. They said that it becomes easier to live with and indeed it does
Grief has stages and everyone goes through the stages at a different rate. At first my heart was pounding so much, I could hear it in my ears in bed at night so I concentrated on repairing the actual physical symptoms which are caused by cortisol. I did this by just sitting and looking at some trees, hypnosis cds that helped me sleep, meditation and quiet cycling outside on my own
Little by little, the stages unwrapped themselves and there is much online about the various stages. I made myself busy, I cleared, I maintained the house, always busy and the work helped
Year 4 I decided that I would move and I did, packed up everything myself, still busy. That was the year that I went through the last stage of acceptance and being able to forge a new life for myself.
In the 18 months after I was widowed, I lost my dear sister in law exactly one year to the day and my sister, 6 months later
Msida what did help very greatly, was to have a short list, every single day before going to bed, something to get up for, a few things to do. Also I made very sure that I ate well, just simple food and perhaps all in one pan eg rice, fish and easy veg. The first thing to do though is to help your physical self, the mental healing will follow
hugs from me, I know exactly what you are going through