Hi Bobby,

I know how you feel: I have 2 possible suggestions for the 2 problems as I see them.

1. Getting in a tizz because there's just too much to do at once.
What I find helps is to get a blank piece of A4 & a pen & draw a spider diagram (I usually put the words "what's in my head" or something like that in the circle in the middle). Empty your head of everything you have going on: with your studies, even your out-of-work commitments.
Once you have it down on paper, number each task: 1 being the most important/pressing thing you have to do. Next, it's a case of being realistic with how long you think it'll take you to complete each task & drawing up a plan of the day/s ahead. You could take some time to do this first thing in the morning or last thing before you go home, so you have a clearer idea of what it is that you need to focus on.

I know you're saying that you have to focus on mor than one thing at a time, but surely there are some things more pressing/important than others? & from your own admission, you find juggling tasks a problem: I would even go so far as to say then that this is not a talent you necessarily need. It may just be a question of working that little bit longer into the day (i.e. when your experiments aren't running) to make more headway on writing up.

2. I also have a fear of getting in there and doing my practical work at times, & all I can suggest is that you just have to bite the bullet: get in there, make appointments/meetings with people that can help you (i.e. school contacts) & work towards that - from experience I know that if you have to 'deliver' to an actual person then it makes you all the more motivated to get it done for the scheduled time. It won't be easy, but once you give it a go, you'll be so relieved. & with respect to your results, don't forget the mantra of the PhD: "No results is a still a result!" Just go get them!!