Textbook INTP traits, right?
You dont even need this, however, that'd be bonus,as the emotional need of the INTP is very low. In order to be sound, you merely need to make sure that you're not isolated. Maintaining company of other Ns, especially INTs will be very helpful. However, if your interpersnonal skills are poor and you are generally uncomfortable in the external world, this will be difficult to accomplish for you at this point.
I recommend cultivation of Extroverted Intuition through solitary activities. You can accomplish this by elevating your reading pace.
eyeQ - Read Faster, Memory Improvement, reading enhancement, improve test scores
And then forcing yourself to read literature which will inspire you to use Intuition more than Thinking as you naturally do. Existentialist writings are highly recommended for this activity.
Nietzsche, Sartre, and Dostoesky. All three of these authors were dominant Introverted Intuition and easily more intuitive than 95% of all people who have lived to this point.
I also recommend reading the works of Dominant Extroverted Intuitive thinkers like Tolstoy, David Hume(more essays than philosophy, I'd grab his last philosophical piece--Dialogues Concerning natural religion and History of Natural religion as there we see a distinct use of sound Extroverted Intuition and of course his 6 volume History of England), Voltaire, and Bertrand Russell (his numerous writings in popular philosophy).