How Can I Reduce The Time Of My Sql Query Which Has More Join's Used And It Takes More Than A 1.5 Mins To Execute

SELECT  prh.header_id  , prh.staff_id  , prh.name  , prh.description  , prh.create_date  , prh.timezone_id  , m.market_id
    , m.market_name  , agy.agency_id , agy.agency_name  , adv.advertiser_id  , adv.advertiser_name  , prh.product
    , prh.survey_id  , o.office_id  , o.office_name  , ae_staff_id  , st.first_name AS ae_first_name  ,
 st.last_name AS ae_last_name , prh.flight_start_date  , prh.flight_end_date  , prh.flight_month  , prh.demo_id 
 , d.demo_name  , prh.points_goal  , prh.syscode_summary , prh.network_summary  , prh.daypart_summary , 
prh.weekly_summary, prh.bmonth_summary  , prh.client_code  , prh.product_code  , prh.estimate_code  , prh.geography_id  , 
g.description as geography_name  , prh.survey_source_id , ss.source as survey_source_name, prh.show_hh
    , isnull(prh.show_survey, 0) as show_survey  , isnull(prh.display_type, 0) as display_type  , 
isnull(prh.Show_Ratings_Imps, 3) as Show_Ratings_Imps , isnull(prh.Zone_Consolidate, 0) as Zone_Consolidate , 
isnull(prh.Order_Num_Display, prh.survey_id) as Order_Num_Display , isnull(prh.Total_GRPs, 0) as Total_GRPs
   , (SELECT EST.iPlus FROM NCCCableBuy.dbo.Survey SUR JOIN NCCCableBuy.dbo.Estimate EST ON 
SUR.Estimate_ID = EST.Estimate_ID
    WHERE (SUR.Survey_ID = prh.Survey_ID)) AS iPlus
        FROM post_saved_report_header prh
         LEFT JOIN survey_source ss on prh.survey_source_id = ss.survey_type_id
         LEFT JOIN geo_type g on prh.geography_id = g.geo_id
         LEFT JOIN market m ON prh.market_id = m.market_id
         LEFT JOIN ac_agency agy ON prh.agency_id = agy.agency_id
         LEFT JOIN ac_advertiser adv ON prh.advertiser_id = adv.advertiser_id
         LEFT JOIN staff st ON prh.ae_staff_id = st.staff_id
         LEFT JOIN office o ON prh.office_id = o.office_id
         LEFT JOIN demo d ON prh.demo_id = d.demo_id
         WHERE prh.header_id = 246