We should always "rely upon the confirmation of the Holy Spirit.“

O ye beloved of Baha'! Do not look at your weakness, nay, rely upon the confirmation of the Holy Spirit. Verily, It maketh the weak strong, the lowly mighty, the child grown, the infant mature and the small great. (‘Abdu'l-Baha, Tablets of ‘Abdu'l-Baha v2, p. 273)