When you struggle in prayer, it is helpful and wise and an act of humility to look to others for help. It is what I have been doing much of recently. When the pump is dry, it needs priming. Dead guys frequently help me. C.H. Bogatsky:
Dost thou want nothing, O, my fellow-mortal? Hast thou nothing to ask? Yes, thou replies, I need an infinite supply. Well then, draw near to thy precious King and Bridegroom without fear.
Lo! He holds out His golden sceptre to thee, saying, "Only ask; not the half, but the whole of My kingdom shall be granted; nay, I will give Myself unto thee."
Disclose to Him, therefore, thy whole heart, mentioning all thy wants and grievances. Whatever is poured out before Him, is lodged in its proper place; He takes the burden from thee, and encourages thee to hope for seasonable and full relief...Ask of Him, therefore, all thou needest, and ask in faith.
(from Into His Presence: Daily Devotions for Prayer, Mon Nov 12.)