What is hard about being an INFJ?

Depends on your outlook. It’s actually easier being an INFJ

So far as I can see, it is far easier being an INFJ than hard, which is quite a luxury considering how other non-INFJ personalities fare.

Look at these factors for example:

1. INFJs love being alone. Their love of solitude brings them more positivities than ‘love of people’ to others. Their alone time connects them to their inner self, to nature, to creative thinking pursuits which are exactly the areas where ‘people-loving’ people miss out on and have to work really really hard to experience. For them being alone is depressing, distressing and leading to serious psychological problems.
   (Meaningful ‘me-time, or alone-time is rejuvenating and healing even for people who hate being alone. Imagine: others have to force themselves hard to do what we do naturally and love it. What is more powerful and preferable? Being unable to exist alone or loving being alone? )
2. For this reason others are almost morbidly, painfully dependent on social relationships such as INFJs never are which makes INFJs extraordinarily free, independent, self reliant and creating their own happiness within themselves. They also get to bypass so much of drama, stress, pains…