Answer

As a rule, it’s impossible to explain two commandments in one word, especially if you find them difficult. So you need to specify what exactly is difficult and what you’re asking for. Leave the number of words and lines to me.
I’ll just say in advance that neither of these two is a commandment. Trust certainly is not, and faith is indeed counted by Maimonides (positive commandment 1), but that is a very puzzling matter and doesn’t seem correct to me.