Here are examples of the misuse of this.
• Write a brief summary of the ways you could show this person's selfless love. (Unless the person was physically present, use that.)
• Nothing in our conversation prepared me for this question. (The context was past tense, as shown by prepared, so someone asked the question in the past.)
• On this particular day my intuition kept tugging at me to turn the car around. (That is probably better. If the author uses this to make it what we call present continuous tense, the sentence should read: On this particular day my intuition keeps tugging at me. . . Or she could have shifted it to the past tense: On that particular day, my intuition continued to. . .)
In each of these four examples, that is probably the better word choice.
Because I am a growing writer
I'm careful to distinguish between this and that.