Is my Du'a being blocked?

Salaam. Life feels like a constant struggle. I'm always saying Alhamdulillah for my blessings, but most days, things just seem to go wrong. I've been making the same du'a for years, asking for the same things, but they never happen. It makes me wonder if I've done something that's stopping barakah from coming into my life. Does anyone know if there's a way to remove whatever barrier might be there? Jazak'Allah khayr.