From the aspects given in the link. I assessed my mental strength. I'm able to fulfill some of those aspects, like positive and constructive optimism and living in the present.

After checking all the nine points I thought I pass at  least 7 of them fully and remaining 2 partially.

No man is perfect. Some may not be be mentally strong according to the checklist, but they are successful in their lives.

Without meaning to boast, going by the list  I can say I am 100% mentally strong ...at the same time I know my strengths and weaknesses too ..

Why one should think about your strong points as boasting ? If you are really mentally strong it is a matter of pride.

Well my thinking goes like these "if you have Passion you can do anything, even you strength your mental ability which is laking in you

 Having Passion to do things itself says that you are mentally strong. But having passion alone will not work if you do not persevere.