Then other people are absolutely assured, without the least doubt... and they really, really shouldn't be.
Holy Spirit had so revealed my sin to me that I knew I was capable of anything, apostasy not the least. I saw myself in every "soil" except the fourth, in every warning in Hebrews, and of course in the unpardonable sin.
Think it through with me: God tells me I'm a sinner. I believe Him. God tells me Christ is my only hope. I believe Him. God tells me I must repent and trust in Christ. I believe Him in that, too. God tells me I must trust Christ alone, and not lean on works or any other false hope. I believe Him in that, and I do it.
"No," Paul would say to me, to you: "you have it backwards. You don't get joy and peace, and then believe. Believe, and then you will know joy and peace."
In future posts, I may focus on some of the threats to or enemies of assurance, and how Biblically to do battle with doubts.