Be soft and gentle with your mind
Mind has the nature of a soft element. It will be easier to concentrate it at your center when you deal with it softly and gently. We don't like anyone to force us to do something. We appreciate it so much more when people ask us kindly. It is the same for your mind; never force your mind to be at the center. The more you put effort on your mind, the more it will resist and the more you will suffer.
Meditation is a good exercise to develop your patience. Once you give up trying to get everything immediately and accept that you have to spend more time on it, you are increasing your chance to get it.
Please do your best for your mind during meditation. Give it time to rest. Let's not disturb or bother the mind when it starts to be peaceful inside. Be patient, be kind, be soft and be gentle with it. The way a father and mother love their children and always forgive always their mistakes is the same way you can nurture your mind with kindness and gentleness. Spend time to achieve each step of meditation. Don't hurry. You are not competing with anyone.