To feel loving kindness for others we first must train in being honest, loving, and compassionate towards ourselves. Without unconditional loving kindness for ourselves it is difficult, if not impossible, to genuinely feel it for others. No matter how we feel, we can aspire to be happy.
Look within, beyond the physical body, you have the faculties to do so. Focus your mind away from sensual input and you will discover a new mode of perception. Searching in this way you will begin to understand, and all your doubts will cease.
You can accept everything, truly extend your goodwill in every direction. Or you can deny everything, recognizing that everything you see and think is a falsehood, an illusion, a veil over the truth. Both paths lead to the spontaneous awareness of the harmonious oneness.
After finishing your own tasks use your strength in the service of others. Help where help is needed but weigh carefully how much you can help without doing harm. Only when this feeling exists can you give yourself unconditionally, without hesitation.
Quote: Never do anything against conscience, even if the state demands it. —Einstein