Those who are eager to awaken their spiritual consciousness and who thus have unflinching, undeviated intelligence certainly attain the desired goal of life very soon. – Sri Caitanya Mahaprabhu, Sri Caitanya-caritamrta, Madhya-lila 24.170 (quoted from the Naradiya Purana)
For one whose mind is unbridled, self-realization is difficult work. But he whose mind is controlled and who strives by appropriate means is assured of success. That is My opinion. – Lord Sri Krishna, Bhagavad-gita 6.36
If one is unhappy to see the distress of other living beings and happy to see their happiness, his religious principles are appreciated as imperishable by exalted persons who are considered pious and benevolent. – Dadhichi Muni, Srimad-Bhagavatam 6.10.9
In happiness and distress, in good fortune or in bad everywhere the auspicious hand of the Lord is present. In this mood everyone should give up illusion and turn towards the service of the Supreme Lord. As a result, at some auspicious moment the necessity of praying for the mercy of the Lord may arise in the minds of the living entities.- Srila Bhaktisiddhanta Sarasvati Thakura, Commentary on Sri Caitanya-Bhagavata,adi-khanda 14.185
O Radha, service to Tulasi gives the greatest piety, the greatest good fortune, and the greatest benediction. It gives Lord Krishna’s association. – Sri Candranana, Sri Garga-samhita 2.16.2