Yes its lonely,even if we share grief for the same person with others,people grieve differently and had their own bond with them its never quit the same.There is also an expectation by people who don't know grief that somehow it switches off at about a year,so because they expect it of us we put pressure on ourselves ,and think something is wrong with us,when in reality it is something that lives with us and fades then resurges and takes its own path.
When I lost my husband I wanted my grandchildren to remember him,even the ones yet to be born who missed out on knowing him. Making a memory box with your children might help,when you're ready,because when we share happy memories they become the ones that are foremost in our minds.