Hi dear I admire you for positive outlook. It can be both. If any medical issue than investigation is must. I prefer some basic test to rule out medical causes like blood count, blood sugar, blood pressure and penile Doppler to know blood flow and chance of erection with medications etc. I would like to inform some other causes which might affect erection. 1st is life syle stress and busy life style make u fatigue and secondry to this it makes less desire in sex and erectile problems. so do exercise. meditations healthy food and diet. proper sleep. make schedule stress free. enjoy pleasurable activity and hobbies. 2nd is relationship free communicative and mutual understanding will help sex is mutual act so try to do mutually and tell your problem to partner this will reduce your anxiety and able to erect easily so stress free lifestyle and mutual communication will help third is physical health routine check up and fit physical health is necessary psychological soundness is must. I prefer medicine like sildenafil and tadanafil in selected patients, but after proper evaluation. Hope you will get best. Happy to help you. Thank you.