1. One does what I don't do: one makes a regular schedule for writing and keeps to it, turning off all distractions; one is kind to oneself if one writes only a sentence, and one rejoices if the words flow like Niagara Falls; one doesn't talk about it (except for perhaps specific questions) until it's done; and when it is done, one goes back over it, reading and re-reading, until one can't stand to see it for a while, then one takes it to a friend and gets it read, and talks about it, and finds out just how awesome it really is. :-D

2. Probably because the mouth is more sensitive because of the cold of the ice cream.

1. Ah! I should have been clearer. I was referring to reading. b´But much of your advice will work for both! Thanks haha

2. Perhaps. or maybe it is the contrast between smooth and prickling...

1) I don't finish books I'm not interested in. My degree of interest determines whether or not I'll finish it.
2) While there's an increase in sensation where the mouth is cold - try holding a bit of water ice in your mouth and then add fizzy water to verify the difference in sensation - there's also a chemistry reason: Sugar. Grab a glass of fizzy water and pop a tiny bit of ice cream in. See how those bubbles form (CO2 coming out of solution) around the ice cream? Sugar is one of the things that causes CO2 to come out of solution, and it'll do the same thing in your mouth when you've got sugars in your mouth.

2) Ah! yes, I see. that makes perfect sense. :)
but then it should be the same after eating other sweets too.

Yup. It works (less effectively in most cases) with other sweets too. You're looking at a combination of perceptual and chemical factors, with cold+sweet maximizing the initial effect. If you want to get even more crazy, part of the reason ice cream (from a selection of many cold sweets) is particularly noticeable is that its sugar is in an emulsified suspension in a thin layer that coats the inside of the mouth very evenly. A thicker layer, or a more variably distributed one would result in fewer bubbles forming where you could feel them.

How interesting!
Gosh, I did not expect such a precise answer to my question. Thank you haha

1. Carefully select books that you know will interest you! Or just read a small amount at a time, but make sure to do it every day. I read books about 10 pages/day, but always at bedtime so it's a habit.

Good idea. some unwritten routine. :)

1.) Read every day, or if you're making one, write every day.
2.) Yeah there's some science behind it, but the point is that it's a fun sensation, right?

1) Keeping going is the hardest part haha
2) Yes! wetdryvac has given a wonderful explanation of it all above.