I'm not a great saver. In general, I'm a spender. But I want to become a decent saver so that that I can invest it and make a good pile of money before I retire and hopefully live well before that. Given my spending nature, for me, it's about creating systems that take out the need for willpower and that make it easy for me to spend less and save more. Monzo, Marcus, and Moneybox help me do that. Monzo Monzo is a new bank account that's mobile-only and aimed at young people. It has a cool bright pink card that when you tap it or use it, sends an instant update to your phone. So I know immediately when I buy a coffee or lunch. It …