When Allah wants you to grow. He makes you lonely, uncomfortable, anxious, tired and allows you to suffer. But He never lets you fail. He holds your hand and guides you toward what He wants you to become, then unveils His beautiful surprises for you. So, have Sabr.
Lesson from Surah Yusuf:
Dreams come true, if Allah wills. Keep striving, keep working for it, keep praying for it, keep asking for it, keep hoping. All things come in due time.