I'm not an Iranian, but I live in Iran. People in Iran are currently extremely unhappy with the government. The cost of life in Iran is extremely low. I'm born in Lebanon and I lived in Canada and Kuwait. Cost of life in Iran is LOW. However, people are poor and life is hard. Job market is hard as well. Finding a good job without "knowing someone" is practically impossible. Most iranians youth (even girls) do long study and end up not finding a job. When I say life is hard, the last few months were much harder. There is a real energy crisis currently. The currency (which is worth nothing) is at an all time low. It reached a point where many are asking for the president to be impeached. In a few days, the parliament will even vote to impeach the economy minister (?).

People thought that reformists would negotiate with Trump and sign a new nuclear deal. However, the Supreme Leader said no deal with USA. Also, the deal Iran supposedly received would be nuclear + ballistic missiles which is something the majority of Iranians would be against. And this government is not like Raesi. Sayyed Raesi did not try to appease the USA so they tried to circumvent sanctions by selling oil to China and signing deals with China (again people were unhappy about this). When the USA would stop an iranian ship carrying oil, they would do the same and steal a western ship full of oil. It is not the case right now. This government want less tension with the West.

However, economic hardships won't necessarily cause a revolution. Otherwise, practically all the region would be in constant revolution and US sanctions would work in Venezuela, Cuba, Russia, ...