Spiritual service is most beneficial when it lessens self importance.
One does not enter the gates of heaven by works alone, but by grace. In the apprenticeships of students to monasteries, ashrams, and mystery schools of all sorts, the students would be required to work for their stay. They would scrub the floors, wash the clothes, make the meals, and clean up afterwards. All of this work gives the appearance of servitude to the teachers and masters.
The reverse actually holds more truth. The masters are serving the apprentices with something much greater.
The apprentices work is not to do the job of form, or task at hand. Their real work is the inner work of becoming humble, of releasing their self-importance. It is through performing these tasks that the apprentices have the opportunity to face their own selfishness.
It is not the service to the master that is bringing them closer to heaven. It is the destruction of their self-importance that is taking them there. In letting go of their own personal point of view, they have the opportunity to grasp something greater. Initially the apprentice’s view may be one of resentment. He may think he is above doing the laundry. He may resent his teacher for having to make his meals. These acts of service allow the apprentice to see all the places that he is selfish. When the apprentice has healed himself of selfishness, he can begin to serve selflessly.
The master serves the apprentice by tasking him with chores so that the apprentice can deal with his own selfishness. Helping to free the apprentice from his selfishness is a far greater service than scrubbing floors.
It is through practicing service with the intent that our self-importance be diminished that we progress to selfless service. Selfless service is action without any expectation or want of recognition or reward. It is through practicing selfless service that we come to grace. It is through grace, that we will enter Heaven on earth.
You do not need to travel far to find a place to practice. You can be in service to your spouse. You can be in service to your boss. You can be in service to other drivers as you commute to work. A true master is in service all the time. The people you are in service to do not need to know. If you find that you want to be recognized for what you have done, you are dealing with your own selfishness.
If you have a need to tell them, it is only because your self-importance wants to be recognized. When the urge for this appears, acknowledge it, but do your best not to act on it.
The truth is that your service is not really for anyone else. Your works are to diminish you own personal importance. The world will benefit a small amount from your works. You will benefit a thousand fold if your works bring you to grace and into a life of heaven on earth.