Is my penis size affecting my self-esteem?

This could be a sign of low semen volume. Dehydration, stress, or some medication may lead to this condition. If you want to increase your ejaculate then drink lots of water and do exercises that help in reducing stress levels. Also, seek medical attention if the problem persists because it might be an indicator for an underlying issue. 

When you wake up, if you do not get morning erections, it could be because of several reasons. The most common reasons like stress, diarrhea, or lack of sleep are included. For a healthy lifestyle, observe healthy eating, regular exercise, and relaxation methods. If it remains a problem, then get advice from a health specialist.

Body activity is usual, however, when a teenage boy exceeds the limit of practicing masturbation he may face premature ejaculation. You might come to a climax fast while watching porn. This is termed as premature ejaculation. You can use methods such as stopping and starting during arousal, concentrating on relaxation, and if needed, talking to a therapist, to work on this. 

Your erection issues may have various causes, such as stress, anxiety, or health conditions like diabetes. In some cases, infections can also affect your ability to maintain an erection, especially in the morning. To address this, it's important to maintain good hygiene, stay hydrated, and seek medical help if infections are suspected.

For someone young like yourself can be common to masturbate. It is safe to do so each day and it will not hurt you. However, excessive masturbation may lead to soreness or irritation. If you experience these symptoms, take a break for your body to heal itself.