I started learning about spirituality through "law of assumption", basically everything that happens to you was caused by you and your thinking. But after digging deeper into other spirituality lessons i realise that there is one where "life is a river and you are flowing down the river, you can change your course swim left swim right but you are still flowing down the river".

It made me think is there anything that you can't control in life? or you can control everything which happens to you be it good or bad? I know that life is an illusion and that it is a reflection of your inner state however i'm still confused about how all these laws link up.