This is an impossible decision that nobody should be forced to make. There is no guarantee that even with the J&J vaccine, you won't be required to get a booster later on. There are always other options. If your job is dependent on you taking the jab, perhaps there is another employer (maybe one with fewer than 150 employees) that may be happy to hire you without taking the jab. If you are being required to take the jab to attend school, check into remote learning or see if you can find another school that doesn't require it. In some countries if you can prove you have already had covid, you will be treated the same as the fully vaccinated and I hope that soon more countires will follow this protocol. If these options wont work for you I would suggest just holding out as long as possible. Good Luck!