You are encouraged to continue to keep in mind the spiritual dimension of your struggles. We are assured by ‘Abdu’l-Bahá in the following words: “The more difficulties one sees in the world the more perfect one becomes. The more you plough and dig the ground the more fertile it becomes. The more you cut the branches of a tree the higher and stronger it grows. The more you put the gold in the fire the purer it becomes. The more you sharpen the steel by grinding the better it cuts. Therefore, the more sorrows one sees the more perfect one becomes. That is why, in all times, the Prophets of God have had tribulations and difficulties to withstand. The more often the captain of a ship is in the tempest and difficult sailing the greater his knowledge becomes. Therefore I am happy that you have had great tribulations and difficulties... Strange it is that I love you and still I am happy that you have sorrows.

‘Abdu’l-Bahá, Star of the West, Vol. XIV, No. 2, p. 41

Life is a constant struggle, not only against forces around us, but above all against our own 'ego'.

Shoghi Effendi, Lights of Guidance, p. 113

Clearly, the difficult periods in our lives are not without purpose. Among other things, they offer us a prime opportunity to express our love for Bahá’u’lláh in a meaningful way. It is relatively easy to be a believer when one is not challenged, when one is happy. However, in times of adversity, we must draw upon our inner, spiritual resources.

The Universal House of Justice, 1985 Dec 02, Child Abuse, Psychology and Knowledge of Self

The struggle between the forces of darkness -- man's lower nature -- and the rising sun of the Divine teachings which draw him on to his true station, intensifies day by day.

The Universal House of Justice, Messages 1963 to 1986, p. 113

Tests are benefits from God, for which we should thank Him. Grief and sorrow do not come to us by chance, they are sent to us by the Divine Mercy for our own perfecting.

Paris Talks, p. 50