I'm going through exactly the same thing as you right now. I'm struggling to find a job! I'm also really anxious about rejection and because of social anxiety the process of applying/being interviewed etc is so scary! You're putting yourself out there to be judged and it's really hard!

I just take one day at a time. I do one thing a day to help in my job search, whether it's updating my cv/linked in or sending in a job application, or even just searching for a job. It stops it from taking over and becoming too overwhelming.

Always ask for help and let your family and friends support you. It may be a solo individual thing but you don't have to go through it alone. Get people to read your cv, look out for jobs for you etc! I think it's so important we look after ourselves when job hunting! Especially as it can effect our self esteem so much when we get rejected.