I'm not aware of any verses that specifically refute this position, although all the suicides I see in the Bible (King Saul, Judas) are negatively portrayed.
1 Samuel 31:4 - 6
ESV - 4 Then Saul said to his armor-bearer, "Draw your sword, and thrust me through with it, lest these uncircumcised come and thrust me through, and mistreat me." But his armor-bearer would not, for he feared greatly. Therefore Saul took his own sword and fell upon it. 5 And when his armor-bearer saw that Saul was dead, he also fell upon his sword and died with him.
For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
Your life is not yours to take! Yes life is a gift from God, but he created you for his purposes to fulfill something for him! When you have completed your life’s purpose, then God brings you back home!