"Therefore, since we are surrounded by such a huge crowd of witnesses to the life of faith, let us strip off every weight that slows us down, especially the sin that so easily trips us up. And let us run with endurance the race God has set before us. We do this by keeping our eyes on Jesus, the champion who initiates and perfects our faith. Because of the joy awaiting him, he endured the cross, disregarding its shame. Now he is seated in the place of honor beside Godโs throne."
โ Hebrews 12:1-2
You don't have to keep sacrificing yourself over and over for other people. Jesus Christ already sacrificed Himself for you out of love (John 3:16) and all He wants is your love, attention, friendship and obedience.
Have boundaries for yourself, but keep yourself opened up to God!