PDC seems to have a handle on it. Don't beatup on yourself if you don't feel your behaviour is socially acceptable. It will take as long as it takes. I recovered from losing a husband and my children's father, in 3 years. It was a lot more difficult 20 years down the track, to bear the loss of my daughter. It took 6 or 7 years to laugh again. Now 13yrs on I am bawling away as I type this for you, and miss her every single day. I now have new interests that help but for a long time I could not find any enjoyment in new interests or people. So it just takes as long as it takes to cut a swathe through your existance.
Be kind to yourself.
L