Does concentration last forever ??

[Alex bliss]

Is it possible concentration always because I feel like without concentration self enquiry doesn't seems to last long...

[Maya_0]

No. Concentrations is a quality that fades. I came back from a retreat a few days ago and everyday I can feel my concentration lessen a little.

[Alex bliss]

Hmm ...ok ..I hear ramana maharshi talk about concentration on self ..how to do it ???