See a doctor or urologist to identify the cause
Get checked for diabetes, high blood pressure, high cholesterol, low testosterone, and heart disease
Review all medications with a doctor
Improve sleep quality and treat sleep apnea
Exercise regularly
Lose excess weight if needed
Stop smoking
Limit alcohol
Avoid recreational drugs
Reduce stress and anxiety
Address performance anxiety
Consider therapy or sex therapy
Improve communication with your partner
Try PDE5 medications only if prescribed by a clinician
Use the correct dose and timing for prescribed ED medication
Avoid taking ED medications with nitrates
Manage porn use if it seems to affect arousal
Focus on foreplay and arousal, not just penetration
Give it time and avoid pressure to perform
Follow up if symptoms persist or worsen