1) Remember that all well doing will be rewarded
If you patiently bear something for the sake of God or your testimony for Christ, you can be assured that it will be rewarded in heaven. No good thing you did for God will go unnoticed.
Galatians 6:9 - And let us not be weary in well doing: for in due season we shall reap, if we faint not.
2) Don't compare your life with others.
Psalms 37:7-9 - Rest in the LORD, and wait patiently for him: fret not thyself because of him who prospereth in his way, because of the man who bringeth wicked devices to pass.
3) Fix your eyes on Jesus and your Eternal Inheritance
When we keep looking at our circumstances, people and struggles, we lose sight of the reality that this world is temporary. This is where impatience and intolerance creeps in.