Let me tell you how to love all equally. Do not demand anything of those you love. If you make demands, some will give you more and some less. In that case you will love more those who give you more and less those who give you less. Thus your love will not be the same for all. You will not be able to love all impartially.
Pray to God with tears in your eyes whenever you want illumination or find yourself faced with any doubt or difficulty. The Lord will remove all your impurities, assuage your mental anguish, and give you enlightenment.
Open your grief-stricken heart to the Lord. Weep and sincerely pray, 'O Lord, draw me towards You; give me peace of mind.' By doing so constantly you, will gradually attain peace of mind.