I Feel Alone

So much has changed in the past year, and I feel alone and lost. This is quite absurd as I have my family and a few close friends, and I think I have a sense of direction... My marriage has gone through great trials, but I'm scared as if too much has changed, too many old friends and acquaintances are not the same towards me. There is a hole, a feeling of disconnect from the world, and I am so disappointed in myself that I cant change this feeling. I work, raise three kids, am finishing school, and in all the paths I cross, all the people I talk to- I feel alone.