Is there a hope?

I was always a very optimistic person, though I lived my whole life in Egypt!! Really, whenever a friend of mine, in any stage of my life, complained about life here, surroundings, poverty, ignorance, injustice,...............etc, I used to say:"comoooooooon, it's not that gloomy!! think about it in a positive way. A lot of people laughed at me, but others respected me. They used to say that I give them hope. So, my question here is: Can we change things? The older generations will never change of course, but can each of us, in his / her place makes things better? those who studied outside and came back frustrated, those who had a high class education and came to the outide reality of life, those who were raised in good manners, those who beleive in GOD and in "en Allaha la yo3'aiero ma b qawmen 7ata yo3'aiero ma b anfosehem", those who have kids who need to secure their future and get them the best environment to grow up and survive,................................ If I was asked about that few years ago, I would certainly have answered "yes of course, en shaa Allah we can", but now I am not sure, may be because of my terrible mood status? may be because of what I faced over the last few months? may be because I have this feeling that all people I am dealing with lost the common sense that ordinary persons should have?? I do not deny my frustration, but still very deep inside me I have that hesitating feeling that things might get better!! Please guys do not laugh at me! I am opening the discussion here for optimistic persons only! I need a push, so please if you can help me here, I would really really be grateful:) We can change things, right??