I appreciate your intention to strengthen self-discipline and study. From a Jain perspective, here’s a clear, simple way to approach your goals while staying true to dharma:

• About the 4-year vow to stop smoking for a specific deity (bhomiya ji maharaj):

- It’s okay to make a sincere vow to quit smoking as a form of tapas (austerity) and to strengthen self-control. - Frame it as a positive vow, not as a punishment. For example: “I commit to abstaining from tobacco for four years, to purify my mind and support my studies.” - Support your vow with daily practices: fixed study times, daily pratimā (rituals like pratikraman if you follow that path), meditation or breathing exercises to reduce craving, and avoiding places or people that trigger smoking. - Record progress and reflect regularly. If you slip, return to your vow without guilt and renew your commitment. - If you participate in any local bhakti or puja to bhomiya ji maharaj, keep the focus on self-restraint, gratitude for health, and the wish to use your life for constructive purposes.

• About completing your studies with no hiccups:

- Create a practical study plan: daily hours, a realistic timetable, and small milestones. - Reduce distractions: a calm environment, phone-free study blocks, and regular breaks. - Build a support system: talk with mentors, teachers, or peers who can help you stay on track. - Pair your vow with study goals: for example, “for every week I stay smoke-free, I reward myself with a focused study block and a small break.”

• About not wanting children and preventing accidental pregnancy with your girlfriend:

- In Jainism, interpersonal ethics emphasize consent, non-harm, truthfulness, and respect in relationships. - Modern contraception is a personal and practical matter. From a Jain standpoint, ensure mutual consent, informed choice, and the least harm possible. If both partners agree, using a reliable method of contraception is a reasonable way to prevent unintended pregnancy. - Have an open, honest conversation with your girlfriend about your goals, values, and plans, including how you both want to handle family planning. Respect her choices and ensure you both feel comfortable with whatever decision you make. - If you’re unsure which method to choose, consider consulting a healthcare professional together to discuss options that are safe and acceptable to both of you.

Important note:

• If you’re attaching special religious significance to the vow, you can discuss it with a trusted Jain teacher or monk from your tradition to ensure your forms of vrata and worship align with your sect (Digambar or Śvētāmbara) and local practices.
• Always ensure your actions promote non-violence, truth, and self-control, and avoid coercion or pressure in any relationship.

If you’d like, tell me which Jain tradition you follow (Digambar or Śvētāmbara) and any specific prarthana or puja you value. I can tailor a simple, authentic daily routine and a vow wording that fits your tradition while keeping your goals in mind.