If I could go back in time, would I choose to go through the same journey againhe same path?

This makes sense, but 'to go through' and 'again' are not needed. Also, 'journey' makes sense, but this idea is commonly written as 'same path'.

But if I had the same constitution and personality, I’m afraid don't think I would.

'Constitution' is used to talk about the law; I don't know what you mean by 'constitution'. Also, 'I'm afraid...' is very formal.

A person’s destiny is shaped by their constitution and personality.

It sounds like by 'constitution' you mean 'actions'?

With these, theypeople will likely follow a specificthe same path.

'They' give the sense that there is a specific group of people; 'people' shows you are talking about people in general.

Compared with health and happiness, official posistatus/occupations and wealth mean little.

'Status' or 'occupation' would fit better here.

People often won’t understand this until they’re older.

(A) Random Thought

If I could go back in time, would I choose to go through the same journey again?

But, if I had the same constitution and personality, I’m afraid I would.

With these, they likely follow a specific path.

Compared withto health and happiness, official positions and wealth mean little.

People often won’t/ don't understand this until they’re/ get older.