A note of caution: We can never achieve goals that envy sets for us. Looking at your friends and wishing you had what they had is a waste of precious energy. Because we are all unique, what makes another happy may do the opposite for you. That's why advice is nice but often disappointing when heeded.
The optimist underestimates how difficult it is to achieve real change, believing that anything is possible and it's possible now. Only by confronting head-on the reality that all progress is going to be obstructed by vested interests and corrupted by human venality can we create realistic programmes that actually have a chance of success.