I am experiencing unable to obtain or maintain erection. this has messed up relationship with partner and i. erections aren't hard as used to be.

Unusual: This may be from performance anxiety but may be from other factors as well. Do you have morning erection? If not, you may need to consult an urologist to get an evaluation. If yes, the problem will likely be psychological.

Need evaluation: Erectile dysfunction can be caused by several causes. Smoking can cause ED. Other causes can be diabetes, hypertension , some drugs, low testosterone . You need to see a urologist for evaluation and blood work.