Here are my observations about the image released to the media today by Rhea Chakraborty.
1. This isn't a diary. No date on page
2. No confirmation about entry date
3. No scribblings on pages before or after
4. This looks like a psychological exercise in positivity
5. Pink cover.

The second image is a no brainer.
1. This is a film memorabilia. A gift
2. These are given out free during press conferences & promotions
3. No film hero will use it personally
4. The bottle is new. No wear and tear mark
5. A layer of dust. It hasn't been used for some time.

Who addresses his girlfriend's parents as Sir and Ma'am?
Have you ever heard about it?
I am hearing it for the first time.
I used to call my my girlfriend's dad as uncle.
Doesn't this give away that their relationship was very formal?
And yes, is it really Sushant's hand-writing?

Sushant will never use a pink diary. He never showed any affection to pink in any of his photos.
Most men don't use pink, it's a conditioning we have from childhood.
It seems to be Rhea's diary & Sushant might have scribbled those on her request or during a psychological session.

This page also shows how positive Sushant was as a person. This matches with all the testimonies of his friends, girlfriend, trainer etc.
All of them have said that Sushant was not suffering from depression.
These should be treated as evidence and examined thoroughly.

Ends.