I agree with jf, and I would also add that it is possible that the nisayon is different than you think. If you can only conquer it by ‘being good’ and then you choose to ‘be bad’, perhaps you are looking at too great of a picture. Without knowing your situation it may be hard for me to explain but let me give an example and hope it works.
Let’s say you have given up davening. You used to daven well and for a period of time you have been angry or disconnected and yo udon’t want to speak to Hashem. One day you feel like you want to repair that rift. You decide that starting today, you are going to start davening! So you do, for a week. Then you have a bad day, or you are tired or angry, and you say, “Forget it. I can’t keep this up” Now you feel that you have messed up that nisayon. But maybe the nisayon was about setting realistic goals for yourself. Maybe you are someone who often takes an ‘all or nothing’ approach and Hashem wants you to learn to bite off little pieces and learn to live with small, incremental successes. He wants you to say, “I KNOW I need to start davening again, I will say brachos every morning and more if I feel I can do it” You think you should be davening it all, you are single and have time, but this small, realistic, doable chunk may have been all that Hashem REALLY wanted from you right now.
I hope that that is somehow useful/applicable. And either way, the fact that you care means you are one step ahead.