First of f all, this is catchy. Nicely done!
" What's within control is only with the self, and so I've adopted "The New World Blogger" as a simple wordplay for the popular term "The New World Order".

As for you other questions I offer some tips, but I am not a know it all on all your questions, so this will have to do ;)

A. For a laptop that is portable and has all the power you need this is actually a great one. HP Spectre 13-w025nd x360. You can us it as a laptop and as a tablet too. It is only 1.4kg so easy take along.

As a mobile phone I use a Samsung s6 galaxy edge+ and after years of Iphones I am in love with Samsung. The newest S8 is great. But... maybe Xiaomi and Huawei offer better ones on price vs quality. You should check this out.

Instead of a large DSLR you could check for smaller system camera's which have many similar options. I own a Olympus OMD Em10 with several lenses, but on the go I like to have the zoom pancakelens on it which is only 2cm thick, but is able to zoom. This is an easy point and shoot setup.

B. Tired and blooted.. Lets shake hands! I know the feeling!
Things I do to keep a certain pattern is always keep a large bottle of fresh water with me so I am sure I'll drink enough and stay away from soda's. Also keep a bag of nuts or something close. These fill you up pretty quick and are way better then other snacks.

For working out you got try HIT training, which stands for High Interval. You do several work outs in high tempo, so your metabolism gets a boost. Worth looking in too.

Also try mindfullness. It sounds dorky, but it is very helpful to clear your mind and lower your stresslevel. It can even be done in 4 minutes or so if you don't have a lot of time. Check out youtube for guidance.

C. No suggestions here. Could use some myself...

Good Luck! Enjoy the rest of your holiday.

Cheers, @GoCoconuts