Struggling with doubt towards God

It sounds as if you are already aware that your doubts are unfounded and that they are the product of Satan. As such, then the scriptures teach what to do:

James 4:6 But He gives a greater grace. Therefore it says, “God is opposed to the proud, but gives grace to the humble.” 
James 4:7 Submit therefore to God. Resist the devil and he will flee from you. 
James 4:8 Draw near to God and He will draw near to you. Cleanse your hands, you sinners; and purify your hearts, you double-minded. 
James 4:9 Be miserable and mourn and weep; let your laughter be turned into mourning and your joy to gloom. 
James 4:10 Humble yourselves in the presence of the Lord, and He will exalt you. 

And the writer of Hebrews echoes this when he writes:

Heb. 12:4 You have not yet resisted to the point of shedding blood in your striving against sin; 
Heb. 12:5  and you have forgotten the exhortation which is addressed to you as sons, “My son, do not regard lightly the discipline of the Lord, Nor faint when you are reproved by Him; 
Heb. 12:6 For those whom the Lord loves He disciplines, And He scourges every son whom He receives.” 
Heb. 12:7 It is for discipline that you endure; God deals with you as with sons; for what son is there whom his father does not discipline? 

These writers are reminding us that we must learn to resist such things and that the Lord allows the enemy to tempt us in this way to strength us and mature us just as our earthly fathers disciplined us for our own good. Rather than wish your trials gone, we recommend you take the opportunity to strengthen your will and mind by focusing on Christ and His word. As you do this, you will be better prepared to serve others.

Since you have a large following, the Lord will be particularly interested in strengthening you spiritually. You cannot gain this strength without enduring trials. Christ endured much greater than you, so you cannot complain about such things (since a slave is not greater than his Master). Pride is an ever-present concern for those who serve Christ, and even Paul required a “thorn in his side” to contend with his pride. Therefore, accept these trials of doubt and work to overcome them through the application of spiritual disciplines. 

With respect to the specific doubts, you feel to God’s word, you will find that as you study scripture more, you will doubt it less. For example, have you taken our Isaiah Bible study online? If you take the study, we are confident you will have plenty of reason to cease doubting, for the text itself testifies to its accuracy and trustworthiness.