Sometimes I am confused in choosing a proper tense to use with this word "REGRET":
I) I want to tell someone about my experiences until now, my life experiences so far:
- (1) I have always been careful in making decisions, so I have never regretted anything I have done (implied "so far").
- (2) I have always been careful in making decisions, so I have never regretted anything I did (implied "so far").
II) I want to tell someone about my typical habit/characteristic generally:
- (3) I am always careful in making decisions, so I never regret anything I have done.
- (4) I am always careful in making decisions, so I never regret anything I do.
II) I want to make general advice for my students:
- (5) You should always be careful when making decisions, so that you will never regret anything you have done.
- (6) You should always be careful when making decisions, so that you will never regret anything you do.
Q1: Please help me check which sentences are the good way to use in the 3 situations above.
Q2: It seems that I can't use the simple past (I did) in (2) with the implied meaning "so far". Right?
Q3: I think that In (1), I can change the present perfect "I have always been careful" into " I am always careful". Right?
Q4: I don't know what the difference is between "I have done" and "I do" in the sentences (3) and (4)/ (5) and (6).