Calming Down But Still Got Head Work To Do

After my last post I'm really happy to say that things have improved.
My weight loss pattern of the last three months came into play again and after being stuck for almost 3 weeks I lost 4lbs in a week, and am now averaging 142.5lbs which I'm really happy about. It's funny though, because when I saw the elusive 145lbs there wasn't the huge excitement that I thought there would be...
I've had time to give this a lot of thought recently and I know the reason is that 16 months ago when I started this journey 145lbs seemed impossible, but in my head that 145lbs also brought up a picture of a perfect body... No loose skin, flat stomach, toned limbs etc... Well, let me just say that that picture isn't what I ended up with. Although clothed I am ecstatic with the reflection in the mirror, naked is another thing. I have a LOT of loose skin after losing over 130lbs, especially on my stomach, but also my arms, thighs, knees etc... I am now working with a personal trainer once a week and am definitely seeing improvements from combining those sessions with my usual workouts and a programme he has made for me, but I know in reality that perfect body isn't going to happen, and that's left me thinking, what do I do now?
As 145lbs is the very top of the healthy BMI range for me and the weight is still coming off steadily each month, although it seems in spurts, I've decided to revise my goal to 135-137lbs and see where that takes me, then think again.
Although the number on the scale is still a high priority for me, through these PT sessions and talking with my trainer I'm learning that my body shape needs to become a higher priority now I've reached this point, so I'm trying to take the focus off the number a little, although not really sure how to do it yet.
I'm stuck in a vicious cycle with my weighing I know that. I used to weigh weekly on a Friday am, but then moved to daily weighing, but have to say I'm struggling with that. Earlier in this journey weekly weighing was great because I saw a loss almost every week, so little fluctuations weren't really a problem. But now I'm nearing where I think I want to be I know my weight can alter between half to two pounds each day, and seeing as I'm losing about 4lbs a month now in spurts it's likely that at least a couple of those weekly weigh ins I could likely see the same number or even see a gain. Weighing daily I can see the ups and downs and as long as the general trend is down over a week or two I'm happy. But weighing every day is also frustrating for me as well because I'd be lying if I said it didn't help set my mood for the day.
In an ideal world I'd go back to weighing weekly on a Friday, and just be happy that if I knew I was staying on my eating and exercise plan, I could trust that the weight would keep coming off and my body would keep improving. Any ideas on how I can make this transition?