I started working with a personal trainer a year ago, because I used to be so active and remembered how great it made me feel. I agree the prospect can be quite intimidating, but there is a great website where you can select a trainer who has experience in working with overweight clients (think it was nrpt.co.uk, but will check). I wanted someone who would push me within my limits as obviously I'm not as fit or agile as I used to be. My trainer trains me in the comfort of my own home too, which is not only more convenient, but also really useful as they show you how you can use everyday equipment in your house (stairs, mantlepiece, doorframe etc) to perform various exercises. One aspect of it I love is that I have someone else to be accountable to. She is one of the only people I will talk to honestly face-to-face about my weight and how it makes me feel, and I think it's also useful having her monitor me while doing this VLCD.
On another note, I went to bed feeling rotten last night. Have caught my sons cold and I'm suffering! The next few days while I get over this are going to be tough.. I usually tend to comfort eat when I'm not well so am going to have to fight those cravings over the weekend! So determined to stay on track though.