How can I keep going without my partner?

Try to make new friends, join a club, go to the library, start a hobby. You have to keep active in the life you have now. You absolutely have to try and keep positive, however hard it is. Possibly try volunteering. When I had a family death and subsequent breakdown and my partner of over 13 years couldn't cope with me anymore I thought it was the end of the world but I've now married someone I met volunteering and take each day at a time. That's all you can do. There is no magic solution. I wish you well for the future.