Buddha Shakyamuni went through six years of punishing austerity and ascetic living, when, it was said, he ate only 1 grain of rice a day. Then he left this life behind him and chose the Middle Way. Nonetheless,that period of meditation was important for him and for us, because it lay the groundwork for his discovery, under the Bodhi tree, of the truths of life, of karma and of reincarnation, of emptiness and interdependent arising and so on.
According to Je Tsongkapa's Three Principle Aspects of the Path, one has to begin the spiritual path with renunciation of the Eight Worldly Dharmas. These are: wanting comfort and disliking discomfort, wanting gain and disliking loss, wanting praise and disliking blame/criticism, wanting fame and disliking loss of reputation. Renouncing these worldly dharmas are bound to bring us suffering in some measure.
If we wish to walk the Mahayana path to full enlightenment, we need to practice great compassion and selflessness to the level as shown in the following lines from the Eight Verses of Thought Transformation:
'In brief, I will offer every benefit and happiness to all beings, my mothers.
In secret, I will take upon myself all harm and suffering of my mothers,
Without these practices being defiled by the eight worldly concerns...."
It is said in the Guru Puja that by practicing the above, we purify all our negative karma since beginningless time.
Hence, there can be no doubt about it that hardship is necessary for rapid progress on the path. When we have a skillful and compassionate Guru, he will aid us by giving us various types of work or assignments that challenge us to move out of our comfort zone and endure what some may perceive as much hardship and suffering. However, with proper guru devotion and the correct motivation, these will serve to help move one rapidly along the spiritual path towards the ultimate goal of Buddhahood.