Skill in mediation is something you

Skill in mediation is something you must build from the ground up.
Everything starts from the ground up: houses are built from their foundations,
and birds which fly high overhead must take off from the ground.

As you first begin your meditation, do not compare your progress to the progress of others,
nor should you assume that you will not make any progress at all.
Keep those ideas out of your head! Think that every time you chant “Sammā-Arahaṃ”
your merit becomes greater with each repetition.
And every time you meditate you gain new merit.
It’s as assured as hitting the ground with your fist – you never miss.

As you progress along the path of Dhamma, guard yourself from carelessness and doubt.
Pay no attention to those who direct their anger or impatience at you.
Remember that you are following the path of the Buddha and that, in itself, is gratifying.
Have no doubt that you will succeed, and indeed success will come to you.