It is better to remove the beam from your eye, before you remove the splinter from someone elses.

It is better to remove the weeds from your own garden, before you start with your neighbours.

And why beholdest thou the mote that is in thy brother's eye, but perceivest not the beam that is in thine own eye? / Either how canst thou say to thy brother, Brother, let me pull out the mote that is in thine eye, when thou thyself beholdest not the beam that is in thine own eye? Thou hypocrite, cast out first the beam out of thine own eye, and then shalt thou see clearly to pull out the mote that is in thy brother's eye.

And why beholdest thou the mote that is in thy brother's eye, but considerest not the beam that is in thine own eye? / Or how wilt thou say to thy brother, Let me pull out the mote out of thine eye; and, behold, a beam is in thine own eye? / Thou hypocrite, first cast out the beam out of thine own eye; and then shalt thou see clearly to cast out the mote out of thy brother's eye.

She's the apple of my eye

The eye is bigger than the belly