Oh Gosh I do loads of istighfar, I have prayer beads in my abaya pockets so I can remember to do istighfar and dhikr as I walk.
It's a way that brings us closer to Allah as we acknowledge our shortcomings and our ask for forgiveness. I look at it like with my girls, my eldest is the loveliest most hardworking and conscientious child ever, she has her moments tho and throws strops like only a pre-teen can, afterwards she always comes to me and apologises and tells me how much she loves me and how sorry she is and how she will never ever do that again (I know she will), at that moment tho she means it and really intends it, I'm not going to hold it against her if (when) she slips up but I love her so much for recognising she is wrong and acknowledging and apologising for it.
I also love the following as an encouragement to seek forgiveness from Allah;
This story about “Istighfar” is from the life of Imam Ahmed Bin Hanbal, who is considered as a renowned scholar of Islam and a famous theologian. Imam Ahmed is also considered to be the founder of the Hanbali school of fiqh (Islamic jurisprudence) and is one of the most celebrated Sunni theologians, often referred to as the “Sheikh ul-Islam” or the “Imam of Ahl al-Sunnah.”
During his old age, while Imam Ahmed was travelling he stopped by a town. After the prayers, he wanted to stay for the night in the masjid yard because he didn’t know anyone in the town. Owing to his humility, he hadn’t introduced himself to anyone thinking that if he did, he would be welcomed by many people.
Failing to recognize Ahmed bin Hanbal, the caretaker of the mosque refused to let him stay in the mosque. As Imam Ahmed was quite old, the caretaker had to drag him out of the mosque. On seeing this, a baker from a nearby place felt pity for this man (Imam Ahmed) and offered to be the host to him for the night. During his stay with the baker, Imam Ahmed observed that the baker would constantly recite Istighfar (seek forgiveness from Allah). Imam Ahmed asked the baker if the constant practice of saying Istighfar had any effect on him. The baker responded by telling Imam Ahmed that Allah had accepted all of his duas (supplications), except one. When he asked him what dua was it that hadn’t been accepted, the baker replied that he had been asking Allah to provide him the privilege to meet the famous scholar Imam Ahmed bin Hanbal.
On this, Imam Ahmed bin Hanbal said that Allah had not only listened to his dua but had dragged him onto his (the baker’s) doorsteps.