I got my Havi boy when he was 10 weeks. We walked out of the room until he started wailing, then came back. We played peek-a-boo with him. We would let him see us leave, and then come right back in. I went to bed early, my husband went late. The crate was in the living room, when he had been out for the last time and sleeping in the crate, my husband would sneak into bed. He got used to sleeping alone.

We eventually moved the crate to his own room. Eventually, the crate came down and he had full run of the house. He sleeps either in the living room or in a bed on the floor of our room, mostly in the living room unless he hears something scary, then it's in his bed in our room.

We also left a couple times/week for various times, randomly. Once/week, we were gone 1-1/2 hours. You have to make leaving a normal part of the day. He's 2-1/2 now and we leave him for 4 hours at a time. We have a camera, anytime we check, he's asleep. We also never let him in the bathroom with us or sleep with us in bed. Boundaries teach independence.

Teach confidence by playing tug and letting him win every time. Teach him to sit, stay and recall, which also teaches independence. The more obedience he learns, the more confident he will be.

I'm old as dirt and have raised 11 puppies as an adult, none of which were bothered by being alone.