Those who love Imam Hussein (as) will reach the spiritual perfections and position by attending the mourning gatherings for Imam Hussein (as) and weeping over the tragedies that befell upon him. This is the easiest and fastest way to God's proximity.
من فَرَّجَ مِن مُؤمِنٍ، فَرَّجَ اللّه ُ عَن قَلبِهِ یَومَ القِیامَهِ
Imam Reza (AS): Whoever removes the sorrow of a believer, God will remove sorrow from their heart on the Day of Judgment.