The two topics The two topics

You could also capitalised the title: "The Two Topics."

I wentcame back home from the Netherlands yesterday. I came back home from the Netherlands yesterday.

If you are currently at home, it makes more sense to say you "came home". You went to the Netherlands, then you came home, where you are now.

I was so exhausted and I didn't have enough powerenergy to write my diary entry, so I was going to write today. I was so exhausted and I didn't have enough energy to write my diary entry, so I was going to write today.

OR: write IN my diary When you are tired, you lack energy (eg. you feel fatigued, drained, exhausted). When you are prevented from doing something by forces outside of your control, you lack power (eg. you feel powerless or frustrated).

So, I have two big topics now. So, I have two big topics now.

You could also say: "I have two big topics to talk about now."

I want to write about one of them today, but I am tired today as well. I want to write about one of them today, but I am tired today as well.

You have to write ABOUT a topic. English verbs often need an extra "helper" word. You could also say: "but I am too tired today as well." As in too tired to write.

So, I will write about them both tomorrow. So, I will write about them both tomorrow.

OR: "I will write about both of them tomorrow." Them --> the topics