I recently have had problems getting my penis hard, but when i finally get it hard it stays hard. what's going on and what do i need to do?

See below : Difficulty obtaining and/or maintaining an adequate quality erection (ED: erectile dysfunction) a very common problem. Anxiety performance and fear of failure are common psychological issues either alone or associated with underlying risk factors for ED: tobacco use, HTN, diabetes, high cholesterol, obesity, meds, alcohol, recreational drugs, stress, etc. Recommend evaluation by MD or urologist.