Acting like you don’t care is not letting go.
Pretending that you don’t have any feelings or emotions is not the same as letting go of the attachment you have to your feelings and emotions.
Let go of the attachment you have to your negative thoughts, emotions and behaviours. This doesn’t mean ignoring them or acting like you don’t care about them, this means observe them and be aware of how these negative aspects of yourself affect you negatively. Then let go of the attachment you have to them by not letting them control and limit your belief of who you are.
Letting go of your thoughts allows you to be free from their control, letting go of your emotions allows you to be free from their negative influence.
Do not grasp too tightly to the universe,
Simply allow yourself to be immersed in the universe,