I can understand how you feel too. Our girl is our third dog, the first 2 were very aloof and nervey at first, and were older. We got Suzy 6 months ago, she is 4, and she came into our little one-bed flat like wooohooooo!!! racing all over the bed and furniture lol. Everything was fair game - the remote controls got chewed, my mobile phone destroyed, glasses, shoes and slippers, the carpet ripped up. She was so affectionate and excitable, she would jump on our heads if we were in bed, ... it was stressful at times, but we had to laugh. On walks at the slightest stimulation I felt like I was trying to control a spooked or excited horse. She was/can still be quite a handful physically. We have a small flat and it feels like we are all living in one big kennel.
I have still only left her for 1-2 hours maximum in this time, as I work from home, but it is all a work in progress. I often pop out for 20 minutes max, and I come back to just find her lying on our bed, but my neighbour tells me she whines, even though she seems relaxed when I leave and come back. I know it is just a matter of time. The improvement in 6 months is amazing, and 6 months is nothing.
I agree with letting your dog in the bedroom, some excellent advice here. She knows now that she is not allowed on the bed when we are in it too.