Do you fear him as much as you love him? it's normal for negative thoughts to pop up, whispers are always there. When you develop a strong sense of fear in him, you won't want to disappoint and also a strong sense of love. The reason i wrote fear first is because as humans we need to be put in line, hence the laws of the country that you have to follow. I feared him so much when i first started practicing but as you pray you feel his presence change a bit from angry to neutral to this overwhelming sense of love...now complete adoration..don't get me wrong i still struggle with things that i go through and i get frustrated with him but you have to make sure to repent right after as he is the most wisest, he does everything for the betterment of his servants..it's just hard to comprehend this especially when your in complete emotional pain..but that's the test.
When a thought comes into your mind that is negative but you know you don't agree with but want to entertain quickly say "these are not thoughts of my soul God, please forgive me" do this every time and you will see the thoughts start to go away. Ask him to help you...dialogue with God is important..for Muslims it's called Duwah, you don't just pray and get up..you pray and give thanks..God loves those who are grateful for what he has given them.
May God continue to strengthen you, the believer and submitters and increase us in faith.