Where did I make mistakes in this relationship? How can I correct them so they don't happen again?

In a relationship everyone will think that they are the right one every time an arguments pops out. I think keep reminding yourself not to do that again, because it will burn down the relationship

Its you who has to realise if the mistakes are made by you because sometimes its both sides as for a relationship to work effort from both sides is essential. You can just analyse the mistakes you done and what you have learned from them like from my relationship I learned that a pretty ball won't give you food as in appearance isn't so important if there is no intelligence and no ability to trust. If you cannot exactly justify the mistakes you done you can just briefly talk about it with your partner and than you will know where the improvements can be made .. honesty is quite an important factor :) So you can be sure of what's wrong and there won't be any confusion