The evening fire ritual -aupasanam- is equivalent to donating gold to that extent the several mountains; performing hundred Vajabeya yagna; or performing 10 million kanya dhana. Wow!
Some people do puja in the evening or night.
Before retiring to bed one should wash one's hands, feet and wipe them dry. Once should lie on the left side while sleeping. One should not lie with the head pointing north. Any other side is all right.
Those who sleep very well are agasthya, madhava, musukunta, kapila and astheeka. It is recommended that one thinks of these people while going to bed to ensure a good sleep. One should keep in a vessel of drinking water at the headend. One can also recite vedic mantra or garuda mantras to protect oneself.
If it is the proper season to get a good progeny one can visit the spouse. On other days if a natural urge prevails one can do so. It is said that no male can refuse a spouse if she desires sex. This is because they have been a boon from Indra. The Shastras prescribes certain things. Perhaps more appropriate to say proscribes - certain dates. If anybody observes this thing automatically only have a planned family!
Thus we come to the end of the karma is that one should be doing daily. It is said that one who observes all these things will obtain everything that he desires.