Why the  oldness will not be attained  so easily ?

In the Philosophical theory, (Tattwa Sastra)

 first the man should apply the Samam and Damam in his life.

Means Mano nigraham (restraint of Mind) and

Indriya nigraham (restraint of senses).

Every body is subjugated  (vaseekrutah) by the

 activities of the Mind and Senses.

Very few can have that control  

by their rigid prctice every moment.

In the materialistic life, we  must take

butter milk after meal, and milk at night

 and those who wash their feet and hands

 before taking meals, the oldness will not be attained

 so easily what the Brahma Vaivarta Puranam says.

One should not go to bed with the wet feet.

 What kind of worshipping   the Deities

 like    ?

The Lord Siva is exhilarated by adoring Him   with Abhishekam .

The Lord Sri Vishnu will have the graciousness by worship.

 And the Goddess Sri  Durga Devi   can be pleased

by worshipping her in the form of Alankaram ( ornamentation).

Whatever the worship it may be  we must have

 the true devotion in our mind.