You may well have to put up with these meltdowns for the next 2 years, so it's a good plan to learn to distract yourself. I used to hum to myself or stare into middle space and think about something totally different.
The one thing that really doesn't help is if she sees you getting stressed; it accords an importance to her tantrums that they really are not worth.
The message you want to give is: 'all right dear, you're having a tantrum, but mummy isn't really worried, because she knows what she is going to do anyway and it's grown-ups who get to decide'.
Remember that:
getting angry is not really naughty in itself - it's a natural reaction and she hasn't got more mature ways of expressing it as yet
there is no way a 14 month old can scare you, you are a mature adult and you are getting your way- that's why she's howling!
there is not need to feel guilty because she's upset, it's a completely normal and natural stage of her development
it does NOT mean you are doing anything wrong- it's part of her development, and in a sense her strong reaction shows that she believes in your authority, that's why she's cross!
you do NOT need to be embarrassed in public, they've seen howling toddlers before! The calmer you stay, the more impressed and sympathetic they will be
and it does not mean she is going to grow up into a difficult person- strong-willed toddlers often make very charming 5yos