The speaker is not okay today and tells the asker that while they are broken and shattered into pieces, crying out their rage and pain. However, the speaker expresses that some day in the future they will feel better and be whole again, able to laugh and smile with genuine happiness. For now, the speaker needs to feel and express their raw emotions to begin the process of healing, with the optimism that even if today is rough, some day the sun will shine for them.