Present tense and past tense- is/ mean

A partial letter,

Dear ...,

I am sorry that my question is too ambiguous. Actually, I mean that I wish to have a lifetime of happiness other than a lifetime of unhappiness.

Hello,

1. Can I use the present tenses for the underlined words 'is' and 'mean' in my explanation?

2. Can I use the past tense 'was' to replace the underlined word 'is' and the present tense 'mean' unchanged because my question was recorded in a document?

Thank you.

With best wishes.

Hello Marius Hancu,

I would like to sincerely thank you for your kind reply. The reason why I did not continue with my previous post is to try to comply with the rules of this forum. In Rule 6, it sipulates:

6) Posts may be removed for any number of reasons; please keep your posting on topic and relevant to the thread you are in. If you wish to start a new discussion, or change the subject, please post a new thread in the appropriate forum.

I hope that my explanation will clear your doubt.

I also hope that what you have taught on how to stress 'is, mean and wish' is correctly applied here.

Thank you.

With best wishes.