many of us still are in the process of learning to stop associating positivity with happiness and peace with control. you can have a positive mindset and be a positive person and still experience negative emotions like sadness or frustration, and you can be at peace without knowing exactly what happens next in your life. you are not failing because you cry sometimes or because you tend to get angry, and you are not inable to be at peace because you don’t know what happens next. live in the moment and do what you can and feel what you feel, that’s all you have to do.