Yes, I agree with Alexis. I've never coddled Jazzy, even though she's small and cute it's tempting but I know it would hurt rather then help her. I look at it like a young child who's afraid of something, let's use the dark for example. If everytime they're a little afraid at night and you smother them in love they're never going to learn to deal with it entirely on their own.
If I picked her up every time she was uncomfortable she would live in my arms 24/7. I'll help and protect her, but not by removing her from every single uncomfortable situation right away
I built trust by kneeling beside her while she's anxious and lending my body for her to lean into if needed but not touching or talking to her. If a dog is in her space politely and she's uncomfortable I don't allow growling, I give a gentle but firm "no" with my voice and when she stops I reward by nudging the dog away from her. If the dog is smelling her and she's tolerating it I reward her with a "good girl" if she's actually smelling back I'll allow them to interact for a short period. If she's behaved and then comes to me and puts her paws on my knee I know she's telling me she's had enough so I'll either remove her by picking her up or sending the other dog away.
Same things with humans, she doesn't like strangers touching her. If she's offleash and you're holding a piece of bacon I doubt she's come to you. Again, kneeling beside her lends her confidence with me being right there and I'll reward her if she stays still and allows the person to pet her. Once she's behaved for a short time I will allow her to remove herself or pick her up
I don't think there's a 100% easy fix for weak nerves unfortunately, but you can build their confidence up and show them you'll help and protect them. She knows I expect a certain amount of politeness with people and dogs then I'll help her out and her threshold is progressively getting better and better
Jasmine - Female Miniature Poodle - born Aug 15, 2010
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Koda & Zazu - 4 year old male cats