Wow...Ativan, where were you all my life?

So, i'm 53, currently at the crisis center for a few days because, i'm having a major case of panic and extreme fears from transitioning to a solo appartment, after a year of supervised housing. I had a trauma at my previous home, i was living alone, and since then i've been working with therapy to heal. Now, i've lost all of my furniture, i have to start from scratch, and it's going to happen in May, and there's no way around it. Ready or not. All my housing options here have been explored. I'm overwhelmed, and my OCD is skyrocketting, even doing cleaning chores here at the crisis center although there's a janitor...

So i was prescribed Ativan, 0.5. I don't want to ever stop taking that, i've fought without meds for so long, and now i'm ready to accept a bit of chemical help ( A BIT) and that seems to be the perfect medication, at night before bed. Is there a way this is do-able, at that exact dosage, just once a day, without develloping tolerance or a need to increase the dose? Because i wouldn't. But i would REALLY like to keep that dose, at night, and end for good years of night terrors and especially since menopause kicked in, i sleep even less. 

Last night, i slept without waking up before 5 am, i thought i was dreaming!!!! It NEVER happened since last year. Like please, tell me this is possible? I know that i will become dependant of it, but, if i have no intent to stop, then where's the problem really?

Thank you for not judging my question, it's just that i can't believe i've lived my entire life without accepting meds, while my psychiatrist has tried for years to get me on something. Now i TOTALLY get what she was trying to do for me, taking that edge, giving my brain a break a few hours, so i can use my other tools during the day ( exercise, meditation etc) to function. I have so much to do, i'm exausted, i need my sleep and it doesn't come on naturally no matter everything i've been doing, consistently.