Listening to subliminal messages in Islam is a topic that may be open to interpretation and varying opinions among scholars. Some Muslims might see it as permissible (halal) as long as the content of the subliminal messages adheres to Islamic principles and doesn't involve anything forbidden (haram). Others might be more cautious and advise against it, considering that subliminal messages can sometimes have unknown or potentially harmful effects on the subconscious mind.
Regarding the intention of staring at yourself all day, it is essential to remember that Islam emphasizes moderation in all things and encourages believers to use their time wisely and constructively. Obsessively focusing on oneself or becoming self-absorbed is generally discouraged in Islam, as it can lead to arrogance and neglect of other important aspects of life.
If you are unsure about the permissibility of listening to subliminal messages in Islam or have concerns about your intentions, it is best to seek guidance from a knowledgeable and reputable Islamic scholar or religious authority. They can provide you with a more specific and well-informed answer based on Islamic teachings and your individual circumstances.