Thanks for your question on Healthcare Magic.
I can understand your concern.
Costochondritis is inflammation of costal
cartilage.
Smoking worsens it. So first you have to quit smoking as soon as possible.
Follow these steps for better symptomatic relief in costochondritis.
1. Avoid movements causing pain.
2. Avoid bad postures in sleep.
3. Avoid heavyweight lifting and strenuous exercise.
4. Sit with proper back and chest support.
5. Apply warm water pad on affected areas.
6. Take painkiller and anti inflammatory drug combination.
Don't worry, you will be alright with all these.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.